Friday, April 10, 2015

50th anniversary of "Moore's Law"

In 1965, Intel co-founder Gordon Moore wrote an article called "Cramming more components onto integrated circuits."

In the article he said

The complexity for minimum component costs has increased at a rate of roughly a factor of two per year. Certainly over the short term this rate can be expected to continue, if not to increase. Over the longer term, the rate of increase is a bit more uncertain, although there is no reason to believe it will not remain nearly constant for at least 10 years. That means by 1975, the number of components per integrated circuit for minimum cost will be 65,000.
Note that he is not talking about what would be the largest theoretically possible chips, but about what would be cost effective.

Moore's prediction was based upon extrapolation of the history of the integrated circuits up to that time:


Note that he is predicting exponential growth -- growth at a constant percentage rate.

He does not use the term "Moore's Law" in the article, but the term/meme caught on and we are still using it to describe exponential growth of all things techie -- storage and memory density and speed, communication speed, etc.

Moore's projection held up well beyond 10 years. In this plot of the number of transistors on commercial CPU chips through 2011, the line represents doubling every two years:


The accuracy of his projection is all the more remarkable when you realize that the prediction was made six years before Intel's first CPU chip, the 4004, which had 2,300 transistors.

At some point, density increases will level off, but that point has not yet been reached. Apple's 8X system on a chip that is inside your iPad Air has 3 billion transistors.

The first electromechanical compputers used electromagnetic relays as switching elements. Folloiwing genertions moved to vacuumn tubes, transistors and today's integrated circuits. When Moore's law finaly hits the wall, will we move to another switching technology and continue improvement?


You can check out some cool Moore's Law infographics here.

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Update 4/18/2015

A Re/code article says Moore's law is 50, but may not reach 60. The article quotes Intel executive Tracy Smith as saying they expect to be making chips with 5 nanometer features (about twice the size of a strand of DNA) around 2022, but that will be the end of the line.

The article goes on to speculate on what technology might come next -- the red question mark in the above figure -- but makes no predicitions. It also includes the following video (1m 53s) of Gordon Moore reflecting back on his 1965 article and the term "Moore's law," coined by semiconductor pioneer Carver Mead.


Wednesday, March 18, 2015

Greg Wyler reports OneWeb progress

Think about the possibility of a WiFi network with a low-latency, 50 mbps back-haul link to the Internet in every school or rural clinic in the world.


I've been tracking Greg Wyler and Elon Musk's satellite Internet projects for some time. Both have been relatively quiet (most of what I know of Musk's SpaceX project came from an unauthorized cell phone video of a recruiting talk he gave), but Wyler talked about his company OneWeb in a keynote at the Satellite 2015 Conference yesterday.

Wyler plans a constellation of about 650 satellites in low-earth orbit (about 1,200 kilometers). He said that they plan to launch satellites in 2017 and hope to begin offering service in 2019. (It seems that OneWeb is ahead of the SpaceX schedule).

They will offer 50 mbps, 30 ms latency connectivity to $250 ground stations that will also serve as hot-spots, providing WiFi, LTE, 3G or 2G connectivity.

As shown below, a terrestrial route between Los Angeles and the tip of Chile requires 14 hops. The same route via satellite may require only five low-latency hops. (The figure is drawn to scale).


Think about the possibility of a WiFi network with a low-latency, 50 mbps back-haul link to the Internet in every school or rural clinic in the world.

Wyler showed a prototype of one of his ground-stations and also showed how easy it is to set up. The operator just spreads the solar panels and turns it on -- five seconds install time. Here we see one on the corrugated roof of a building:


This ease of deployment would be terrific for establishing ad hoc communication in the wake of disasters that had disrupted terrestrial communication.

While I have focused on OneWeb's primary goal of providing Internet connectivity in developing nations and rural areas, Wyler also spoke of providing connectivity in aircraft (and ships at sea).


Of course, all of this is speculation for now. Some conference attendees and presenters were skeptical about Wyler's project, pointing out that his low-cost satellites would have to be replaced every five years or so -- a recurring expense. Critics also pointed out that much of the time, the low-earth orbit satellites will be over oceans, polar regions and other sparsely populated areas.

That being said, Wyler has been able to attract backers and partners, each of which brings money and expertise to the table:
Like a modern Internet company that follows the dictum "do what you do best and link to the rest," OneWeb will focus on the backbone and market through local retail Internet service and cell phone providers.

One can also imagine OneWeb providing competition for conventional terrestrial ISPs in developed nations. I can dream of going over to Best Buy, picking up a OneWeb ground station, installing it on my roof and escaping the clutches of my ISP monopolist Time Warner Cable. I am not holding my breath till that happens, but I will be keeping my eye on OneWeb's ambitious project.

For some background on Wyler's previous satellite company, O3B Networks, and more on his plans for OneWeb, check out this video:


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Update 3/20/2015

FierceWirelessTech interview of Greg Wyler.

Wyler says "We've got a pretty clear path. It's not just a technology problem. It is a technology, regulatory, implementation, education problem. It's kind of a little bit of everything." In the interview, he talks about terminal design, their business model and spectrum.

As mentioned above, he stresses ease of installation and low cost for the terminals. OneWeb has the rights to the Ku and Ka spectrum they will use and patent-pending technology to assure non-interference with geo-stationary satellites in those bands. Scale is critical to their business model -- once the constellation is operating, they marginal cost of a new customer is very low.

Friday, March 13, 2015

5G mobile update from Ericsson and Samsung at Mobile World Congress (MWC)

5G mobile communication is coming and prototypes are being developed along with demonstrations. (Remember the saying that projects had to "demo or die")?

Here are a couple of 5G prototype demos:

Samsung transmission speed demo -- 7.5 gbps standing still and a 1.2 gbps in a car going 112 kph:



Erricson demonstrates seamless hand-off between LTE and 5G:



and they brought their virtual reality, remote control excavator with them to MWC:



The final products will probably not be as fast as these prototypes, but they will eventually cost about the same as today's mobile radios.

Both Samsung and Ericsson are talking about initial deployment around 2020, but general rollout and ubiquitous adoption will take many years after that. (This is one technology in which developing nations, which are generally more mobile reliant than developed nations, may somewhat narrow the digital divide). Furthermore, there are no 5G standards, and you can bet there will be more than one.

<dream>
Wouldn't it be nice if there were a global 5G standard -- everyone using the same license free spectrum and protocols -- your phone moving seamlessly between nations and carriers -- cars that were compatible with instrumented roads everywhere ... like WiFi ...?
</dream>

Awake again -- Maybe I will get a Verizon 5G phone for use in the US around 2022.

By that time, out mobile devices will be 10-20 times as powerful and there will be a lot of "things" connected to the Internet. What new applications will we find for this high-speed, low-latency wireless connectivity?

Thursday, March 12, 2015

Leosat -- a third satellite Internet company

I've been tracking Greg Wyler and Elon Musk's plans to launch low-Earth orbit satellites to provide Internet connectivity. Musk's SpaceX and Wyler's OneWeb have now been joined by a third would-be low-Earth connectivity provider, Leosat.

I've not heard about this effort until now, but former Schlumberger executives Cliff Anders and Phil Marlar have been developing the network architecture, spectrum plan and satellite payload since 2013, and they just hired satellite industry veteran Vern Fotheringham as CEO.

Leosat will not be marketing to individual end users, but will target government and business -- maritime applications, oil and gas exploration and productions, telecom back-haul and trunking, enterprise VSAT, etc. Their market seems closer to Wyler's former company O3b, but Leosat plans to cover the entire Earth, while O3b is restricted to locations near the equator.

They plan to offer encrypted connectivity at up to 1.2 gbps with latency under 50 ms using a constellation of 80 to 120 small satellites, with launches beginning in 2019 or 2020.

While SpaceX and OneWeb have focused their publicity on end users and developing nations, they will also have the ability to deliver low latency service over long distances. As shown below, a terrestrial link from my home in Los Angeles to La Universidad de Magallanes in Punta Arenas, Chile required 14 hops whereas a satellite route could be achieved with five hops. (The following illustration is drawn to approximate scale assuming a satellite altitude of 700 miles).


The Ping time for the terrestrial link averages around 224 ms, considerably slower than the sub 50 ms latency Leosat hopes to achieve.

Like many Americans, I am served by a monopoly Internet service provider. Might these folks actually be able to provide competition -- at least in the developing world -- some day?

Update 12/4/2017

Leosat seems to be planning a mix
of polar and inclined-orbit satellites.
Leosat, which recently received an investment by Japanese geosynchronous satellite company SkyPerfectJsat, has announced rough milestone dates for their LEO project. They plan on offering store-and-forward service using two "early bird" satellites in 2019. In 2021 they will begin launching the rest of their 108-satellite constellation. Completion of the constellation and full worldwide service is planned for 2022. (Their initial store and forward connectiivty is reminscent of VITAsat, which offered 38.4 kbps email service in Africa in the 1990s). Judging from this illustration, they seem to be planning both polar and inclined orbits like Telesat.

In this interview (5:31), CEO Mark Rigolle says they will focus on point-point connections rather than linking to terrestrially connected ground stations. Doing so will cut latency -- he estimates 119 ms between Singapore and London. These point-point links will also be more secure than those using the terrestrial Internet. These features will appeal to enterprises needing to synchronize databases, financial trading firms, firms with a lot of sensitive data online, etc.

Thales Alenia Space will develop the relatively large, 670 kg satellites will have four optical links to other satellites, 10 Ka-band steerable antennas, each providing up to 1.6 Gbps of symmetrical data connectivity and two steerable high-performance antennas, each providing up to 5.2 Gbps of symmetrical data connectivity. With their emphasis on speed and security, they are focusing on a premium market in contrast to OneWeb or SpaceX, which hope to provide affordable connectivity to homes, schools, community centers, etc. as well as long-distance links like the one illustrated above.

I also found their patent application for a "System and method for satellite routing of data" on Google, but could not find one in the US Patent Office database. I am not sure why that is nor am I sure what patent-worthy unique invention they claim.

Update 12/21/2017

Leosat has updated their Web site -- it has a rotating image gallery at the top with illustrations and the following captions:
  • Faster Than Fiber
  • Secure Data Communication
  • Instant Infrastructure
  • From Anywhere to Everywhere
This, along with their recent SkyPerfectJsat investment is an indication that they are making progress and focusing on high-end, fast, secure links.

In a talk at the opening of the SpaceX office in Seattle, Elon Musk predicted that they would get 50% of the long-haul Internet traffic. It seems like Leosat will be a strong, focused competitor. (Note that Musk also based his prediction on inaccurate assumptions).


Update 11/14/2019

LeoSat, unable to raise capital, has shut down. I guess investors assumed they would not be able to compete with SpaceX once they begin service with inter-satellite laser links.

Monday, March 09, 2015

Google and Facebook report on developing world connectivity at Mobile World Congress

I've been studying and working on the Internet in developing nations since 1991 when only a few nations had any sort of Internet connection, as shown in Larry Landweber's 1991 connectivity map:


Every nation is connected today, but the digital divide remains as deep as it was in 1991. Both Facebook and Google are working to bring the 3-4 billion people who do not have Internet connectivity online and they described their efforts at the recent Mobile World Congress in Barcelona.

Google

Sundar Pichai, senior vice president of Android, Chrome and Apps at Google Inc., updated the audience on two projects -- Project Loon and Project Link.

Project Loon seeks to deploy a constellation of balloons at an altitude of around 20 kilometers -- above the mountains, air traffic and weather.


The balloons will be airborne routers able to communicate with end users, each other and Internet back-haul locations.


Pinchai said the balloons now average more than six months in the air and keep nearby smartphones operating at 4G or LTE speeds, around 10 megabits per second. “We are well on our way to a platform that, by the end of the decade, will touch 4 to 5 billion people.”

He also gave a progress report on Project Link in Kampala, Uganda where they have installed over 800km of fiber, creating an urban backbone.


As is often the case with municipal networks (as in Stockholm), Google is not a retail Internet service provider, but provides wholesale connectivity to retailers. Pichai said they would be expanding Project Link -- installing fiber backbones "many more" African cities this year.

For more on the Kampala deployment and a thoughtful analysis of the reason for its success, see this post by Steve Song.

Facebook

Facebook CEO Mark Zuckerberg spoke about Internet.org, which hopes to make basic internet services affordable, so everyone with a phone can join the knowledge economy.


While Google is working on long range projects (including an investment in Elon Musk's SpaceX project to provide Internet service using low-earth orbit satellites), Internet.org is already up and running in Ghana, Columia, Kenya, Tanzania, Indonesia and India.

Facebook and their Internet.org partners are focusing on improving traditional terrestrial cell phone technology by improving mobile infrastructure, mass producing cheap, powerful cell phones and caching and compressing data. Their partners reflect this orientation – phone manufacturers, Opera, a Web software company, and Mediatek, a fabless semiconductor company.

Note that they want to provide only “basic Internet services,” not access to the open Internet. For example, in India they offer access to Facebook and 37 other web sites.

Facebook also has a Connectivity Lab lab working on more exotic, long-range solutions.

Short videos on Project Loon and Internet.org

Project Loon:



Internet.org:



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Update 4/10/2015

Mark Zuckerberg spoke at a business conference being held in conjunction with the Summit of the Americas in Panama City yesterday. He announced that Internet.org would be available in Panama and stated that eventually expanding into Cuba “definitely fits within our mission.” (Recall that Internet.org provides “basic Internet services" -- access to leading Web sites -- not access to the open Internet).

Friday, March 06, 2015

The Internet routes around censorship

The Indian courts failed in their attempt to stop the showing of "India's Daughter," a BBC documentary exposing the New Delhi bus gang rape of a medical student and its aftermath.

The Indian government banned the showing of the film and the BBC blocked it on YouTube for copyright reasons. (Perhaps it is visible in Britain).

Banning the video gave it notoriety, increasing its popularity. (This is an example of the so called "Streisand effect," referring to the rush to view an aerial view of Barbara Streisand's house when she objected to it being posted online).

I am not certain when it was banned on YouTube, but it became available on Vimeo on March 5 and by the afternoon of the 6th had been viewed 60,000 times, but it was subsequently taken down.


As of this writing, it is available on the Daily Motion site. By the time you read this, it may be gone from there, but you will probably be able to find it using Google search. (If you are reading this from England or using a VPN -- is it still available on the BBC Web site)?

At nearly the same time, the Chinese government blocked access to "Under the Dome," a scathing documentary on pollution, which had hundreds of millions of view on Chinese Web sites within days of its release.

It may have been banned in China, but it is readily accessible in other nations (with English subtitles) and to any Chinese person willing to use a VPN to view it on YouTube.

Information wants to be free.



Friday, February 13, 2015

Innovations in vocational education and certification

Certification options from Coursera and the California Community Colleges

MOOCs are often used for vocational training rather than a traditional college degree and Coursera has launched six "Coursera Specializations" for vocational training.

A Coursera Specialization requires completion of a group of related courses followed by a capstone project. A Specializations consists of several online courses, developed at universities, leading up to a real capstone project/case study developed by a company in the relevant industry.

For example, the University of California at San Diego (UCSD) and Instagram have collaborated on an interaction design Specialization. UCSD will provide six MOOC-format courses and the capstone project will come from Instagram.

Students can still take the courses for free, but they will not receive a certification of completion and will not be allowed to do the capstone project. Students wishing to complete the capstone and receive a certificate of completion will pay a tuition of $343.

A sample Specialization completion certificate

Another approach to vocational education is being taken by the California Community Colleges, which are proposing fifteen vocationally-oriented bachelors degrees. For comparison with Coursera, consider this proposal for an interaction design degree from Santa Monica College (SMC).

The SMC interaction design curriculum

The SMC program would take longer to complete and would cost more in terms of tuition and opportunity cost, but it covers more ground and is taught face-to-face.

These are interesting, innovative times for vocational education. Hiring practices and societal values will eventually determine the winners, but for now, how would you advise a young person who wanted to become an interaction designer?

Saturday, February 07, 2015

Tomorrow's SpaceX launch: a reusable rocket, science and Earth's next selfie

(See the related post on constellations of Internet service satellites).

Sunday February 8 at 6:10 EST (two minutes after sunset), a SpaceX rocket is scheduled to launch. Previous SpaceX satellites delivered payloads into low-Earth orbit, but this one is destined for the Lagrangian Point nearly 1 million miles from Earth.


At the Lagrangian point 1 (or L1), approximately one
million miles from Earth, the gravitational forces between
the sun and Earth are balanced, which provides a stable
orbit that requires fewer orbital corrections for the
spacecraft to remain in its operational location for a
longer period of time.
Source: NOAA

There are several reasons I will be watching the livestream of the launch.

SpaceX will attempt, for the second time, to recover the rocket. The first time they tried to recover a rocket they failed, but they understand the reason for the failure and hopefully will succeed this time.

The satellite, called "DSCOVR," has scientific and symbolic goals. At the Lagrangian Point, DSCOVR will remain stationary with respect to the Earth and the Sun, enabling it observe the Sun and serve as an early warning system for potentially disruptive solar flares.

Being stationary relative to the Earth will also enable DSCOVR to serve as a distant "Web cam" providing us with a feed of the entire, fully-lit Earth -- an ever changing version of the famous "Blue Marble" picture taken from Apollo 17. (Al Gore called for this space cam while Vice President and, after a long political struggle, his vision is about to be realized).

Earth's first selfie -- from Apollo 17

If SpaceX succeeds in recovering the their X9 rocket, they will refurbish and reuse it in a subsequent launch, cutting cost significantly -- and moving us a step closer to Internet access using a constellation of low-Earth orbiting satellites.

----
Update 2/8/2015

With a bit more than two minutes to go, the Falcon 9 launch was scrubbed -- there was an apparent problem with part of the telemetry system as well as at an Air Force radar tracking station.

They may try again tomorrow about two minutes earlier than today.

The picture below is from the launch live stream just after it was scrubbed.


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Update 2/9/2015

Weather conditions are not favorable for a Monday launch and so NASA, NOAA, the U.S. Air Force and SpaceX have made the decision to postpone the launch until Tuesday, February 10 at 6:05pm ET with a backup date of Wednesday, February 11.

-----
Update 4/14/2015

Elon Musk tweets the bad news -- SpaceX failed again to recapture a rocket after launch.


-----
Update 4/15/2015

A Boeing-Lockheed joint venture is also working on a reusable rocket engine to compete with SpaceX and to reduce dependence on Russian rockets. That will increase the competitive pressure on SpaceX, leading them to cut costs of a potential satellite Internet offering.


-----
Update 4/21/2015

SpaceX reports that their latest failure to retrieve a rocket failed because of a "slower than expected throttle valve response." The next attempt will be in two months. They are learning from their mistakes and rocket reuse will eventually be routine.

Here is a video of the bad landing:



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Update 10/20/2015

Earth's daily selfies have begun. Here is a quote from yesterday's NASA announcement:
NASA launched a new website Monday so the world can see images of the full, sunlit side of the Earth every day. The images are taken by a NASA camera one million miles away on the Deep Space Climate Observatory (DSCOVR), a partnership between NASA, the National Oceanic and Atmospheric Administration (NOAA) and the U.S. Air Force.

Once a day NASA will post at least a dozen new color images of Earth acquired from 12 to 36 hours earlier by NASA’s Earth Polychromatic Imaging Camera (EPIC). Each daily sequence of images will show the Earth as it rotates, thus revealing the whole globe over the course of a day. The new website also features an archive of EPIC images searchable by date and continent.


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Update 11/27/2015

Jeff Bezos' space company, Blue Origin, has succeeded in landing a rocket for reuse. Here's a schematic of the flight:


and here is a video showing the takeoff and slow, controlled landing:



This is a bit of a publicity win over SpaceX, which has failed in attempts to safely land a rocket, but it also shows that it can be done.

We should note that Blue Origin is focused on short space tourism flights, while SpaceX is launching satellites into low-earth orbit for, among other applications, providing global Internet connectivity.

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Update 11/28/2015

Elon Musk used Twitter to congratulate Jeff Bezos on the Blue Origin achievement:


Then he tweeted a reminder that you have to go a lot faster and use a lot more fuel to put a satellite into orbit, as SpaceX has done often, than to go up 100 kilometers to the arbitrary "start" of space and come back down.

He continued tweeting with one about SpaceX's short vertical takeoff and landing experiment:

And, ended with a reminder that the X15 rocket plane had also reached 100 km and returned in one piece:


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Update 12/2/2015

SpaceX's next attempt at a soft landing will be on the ground at Cape Canaveral, not on a barge at sea.

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Update 12/22/2015

SpaceX succeeds in launching satellites, supplying the International Space Station and vertically landing the first stage rocket.

Vertical landing, from Webcast video (below)
Video of the webcast of the entire mission (45 min.):




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Update 12/28/2015

Elon Musk says building a Falcon 9 rocket costs $60 million, but the fuel for a launch to low-earth orbit costs only about $200,000. A reusable rocket must be inspected and refurbished after each flight, but Steve Poulos, a former NASA project manager who worked on the Space Shuttle, says the Falcon 9 booster rocket is much simpler than the Shuttle and estimates the cost of refurbishing a booster at about half a million dollars.

The latest SpaceX launch put 11 satellites into low-earth orbit and safely landed the booster rocket. This is good news for the prospects of low-cost, world-wide satellite Internet service.

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Update 1/6/2016

On December 31, 2015, Elon Musk said "Falcon 9 back in the hangar at Cape Canaveral. No damage found, ready to fire again." Could it have been thoroughly inspected so quickly? Regardless, SpaceX says this one will not be reflown. It will be retired for display -- not sure where, but there are a number of possible locations.

In the hangar at Cape Kennedy

Closeup showing superficial damage

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Update 1/11/2016

SpaceX has twice tried softly landing a rocket on a barge so that it could be reused, but they will try again on January 17th. That launch will be from Vandenberg Air Force base in California and the recovery barge will be in the Pacific Ocean. If they can do barge landings reliably, they will have more launch-site options.

X marks the spot -- just read the instructions

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Update 1/15/2016

Check out this Bloomberg post on the importance of rocket reusability to SpaceX and the space industry. A couple of points from the post:
  • The SpaceX rocket that recently soft-landed on Earth had about 15 times the thrust -- it was about 15 time bigger -- than Jeff Bezos' Blue Origin rocket that landed safely a few weeks earlier.
  • Musk's goal is a settlement on Mars, but a large reduction in launch cost will enable more scientific study of the earth, our atmosphere and the universe, enhanced national security and commercial applications like mining and space tourism.
  • SpaceX has twice failed at a soft landing on a barge at sea, but it is important that they be able to do so for safety and because there are not many landing pads. (They will try again this Sunday).
  • SpaceX has already reduced the cost of launches to low-earth orbit by about 75% -- from several hundred thousand to 60 thousand and with reusability of rockets and other components will achieve the 100x improvement that Musk has predicted.
  • The inscription on the landing barge, "Just read the instructions," is a reference honoring science fiction author Iain M. Banks, author of the novel Player of Games.
The coolest quote was from SpaceX investor and board member Steve Jurvetson, who said "Mars is great for some, but for a starter vacation, I think the moon is a much more interesting destination." He envisions flying around the moon in very low orbit -- just above the highest peaks.

The post also contains videos of the interview:



and the launch and soft landing of the Falcon 9 rocket:



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Update 1/16/2016

Here is a drawing of the soft landing SpaceX hopes to pull off tomorrow. After separation, the first stage will flip around, do a couple of burns to slow down, then adjust its trajectory using fins once back in the atmosphere and do a final burn as it softly lands on the barge. They have failed twice, let's hope the third times a charm.


-----
Update 1/18/2016

SpaceX's attempt at a soft landing at sea failed for the third time :-(. Evidently ice, not rough seas, caused the failure. Here is video of the landing and explosion:


@Elonmusk took it with humor, tweeting "Well, at least the pieces were bigger this time!". (Note that a big piece does end up on the barge -- for study and perhaps for spare parts).

----
Update 1/23/2016

As mentioned above, Jeff Bezos' space company, Blue Origins, succeeded in soft landing one of their New Shepard booster rockets last November. Subsequently, Elon Musk's SpaceX achieved a vertical landing of a much larger booster that had flown higher and faster, stealing some of Bezos' thunder.

Now Bezos is back in the spotlight, because Blue Origin inspected their recovered booster, replaced the expendable parts, made a significant software improvement and relaunched and again recovered it. As Bezos says Launch. Land. Repeat.

Here is a short video (1:49) showing the soft landing last November and the launch and soft landing from yesterday:



Bezos is optimistic because greater inertia will make it easier to soft-land the larger rockets he plans for putting satellites and people in orbit -- comparing the difficulty of balancing a vertical pencil on your hand to balancing a broomstick and they will start full-engine testing of their first orbital booster this year.

The competition between Musk and Bezos is terrific -- let's see if Bezos tries to land a New Shepard on a ship next.


-----
Update 3/11/2016

Yet another cool selfie of the Earth. NASA's Deep Space Climate Observatory (DSCOVR) captured an eclipse, with the shadow of the moon moving from the Indian Ocean to Indonesia and Australia and the pacific islands.


-----
Update 4/8/2016

SpaceX succeeded in landing a Falcon 9 rocket on a barge at sea! They will be able to inspect, repair and reuse the $60 million rocket, dramatically cutting the cost of space projects, including their effort to put a constellation of Internet access satellites in orbit!

Here are pictures of the rocket landing and standing on the barge after landing:




You can see the archived Webcast of the entire mission from launch to orbit here.

-----
Update 4/9/2014

Of Course I Still Love You, we have a Falcon 9 on board.

I am not sure how long the video with commentary (above) will remain on the SpaceX web site, but a video (46:18) of the mission without commentary -- just the radio traffic -- is archived on YouTube, below. The reentry and safe landing of the first stage rocket is shown at 35 minutes 34 seconds into the video.



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Update 5/6/2016

SpaceX does it again -- lands a Falcon 9 rocket on a barge at sea for the second time! If they can do this routinely, it will dramatically cutting the cost of space projects, including their effort to put a constellation of Internet access satellites in orbit.

This landing was more difficult than the previous one because the rocket was launching a satellite into a higher orbit. That meant that it returned twice as fast -- 2 km/second rather than 1 km/second. That meant with 4 times the energy and 8 times the heat needed to decelerate it.

As shown in his before and after tweets, Elon Musk was not so sure this one would work out:

Elon Musk played it cool before the launch.

You can see the mission video, starting just before the successful landing, here.

=====
Update 6/3/2016

Cool pictures of latest Falcon 9 soft landing:

The rocket came down at an angle, yet they were still able to land it safely:

This is the rocket entering the port. I had not understood how small the barge is compared to the size of the rocket or how large the rocket is compared to the size of a person. It's amazing that they can land something so big on such a small barge.


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Update 7/11/2016

DSCOVR photographs the moon in front of the Earth.

On July 5, 2016, the moon passed between NOAA's DSCOVR satellite and Earth. NASA's EPIC camera aboard DSCOVR snapped these images over a period of about four hours. In this set, the far side of the moon, which is never seen from Earth, passes by. In the backdrop, Earth rotates, starting with the Australia and Pacific and gradually revealing Asia and Africa.


-----
Update 814/2016

JCSAT booster after recovery

It's getting to be a bit routine -- SpaceX once again recovered a booster after soft-landing it on a barge in the Atlantic Ocean. Check out the following video (5m 37s) summarizing the launch and booster recovery. A SpaceX engineer explains the tradeoffs in a soft landing beginning around 3m 50s.



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Update 1/26/2017

SpaceX expects to launch only one or two more expendable rockets. They have also proposed construction of three booster landing zones. It seems rocket recovery and reuse will become routine, making satellite Internet service significantly more affordable..

Proposed expansion of landing facility to three zones.

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Update 3/30/2017

SpaceX has recovered 8 rockets after soft landings and they hope to reuse one of them for the first time today. A rocket that landed at sea last April will hopefully be successfully launched and recovered either today or Saturday.

The two and a half hour launch window opens March 30, at 6:27 p.m. EDT, or 10:27 p.m. UTC and the backup launch window opens April 1, at 6:27 p.m. EDT, or 10:27 p.m. UTC. Here is the approximate mission timeline:


The countdown, launch and deployment will be streamed online -- with the usual excellent commentary by SpaceX engineers:




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Update 5/9/2017

In 2015, Boeing announced that they were working on reusable rockets (see above). There was no mention of Internet service at that time -- the goal was simply reducing reliance on Russian and SpaceX rockets. As late as October 2016, Fortune published a long article without mentioning Internet service.

The week after the Fortune article was published, Boeing's FCC application to launch a constellation of 1,396 satellites operating at an altitude of 1,200 km and to subsequently increase the constellation to the total of 2,956 satellites was announced.

The latest development is speculation that Apple may be planning to work with Boeing on satellite Internet service provision.

If so, we have three potential global Internet service providers -- SpaceX, OneWeb and Apple. I hope they all succeed, giving us some competition in the Intenet service market. That would be a boon for current Internet customers who have only one choice for their service provider (like me) as well as people without any terrestrial Internet access.

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Update 6/27/2017

SpaceX is on a roll. They just launched a re-used rocket from Cape Canaveral and recaptured it and, within 48 hours, launched and recaptured a rocket from Vandenberg Air Force base. The precision of the recapture is shown in the following time-lapse video.

Sped up version of today's rocket landing on the Droneship Just Read the Instructions (guess it did)

A post shared by Elon Musk (@elonmusk) on



Elon Musk hopes to reduce the turnaround time between landing a rocket on a barge and relaunching it to 24 hours! His plan for a constellation of Internet-access satellites is looking more and more feasible.

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Update 10/15/2017

SpaceX launched an SES satellite into geosynchronous orbit last week using a Falcon 9 Booster that had previously been flown and refurbished. They also soft-landed and retrieved the booster.

SES CTO Martin Halliwell called this a "major sea change" and spoke of the cost and time savings in an excellent interview following the launch. Here are a couple quotes from the interview:
I think in a couple years time you won’t even consider whether it’s a pre-flown rocket or a new rocket or a second-time rocket ... It will just be a flight and you will buy a service to get to orbit – and that will be that!

Its saving SES months of time and thereby tens of millions of dollars of real money to fly with a used booster rather than having their expensive satellite sit and languish uselessly on the ground.

The average launch delay we have right now is about 7 months ... until we have launch vehicle availability ... It’s just cash out and a very expensive wait ... tens of millions of dollars lost due to delays.
SpaceX has given marginal discounts from the advertised $61 million geostationary launch price for those using refurbished (Musk jokes that they are "flight-proven") boosters, but the price will go down once the roughly $1 billion spent to develop soft-landing capability is recovered. SES CEO Karim Michel Sabbagh expects the price to drop to around $30 million eventually, but Halliwell says the real benefit thus far is the earlier launch date and he does not expect such a dramatic price reduction. In the long run, the Falcons will be phased out and the BFR price will assume reusability from the start.

Thursday, January 29, 2015

Regulation of global satellite Internet service providers

Would global Internet service providers require unique regulation and, if so, what should it be and who has the power to do it?

SpaceX CEO Elon Musk, who hopes to orbit a constellation of Internet-access satellites, recently gave an invitation-only talk announcing the opening of a satellite-design office in Seattle. (An attendee recorded the talk and posted it on YouTube).

Many invitees were engineers and Musk was recruiting, saying "it's a difficult problem so we need the smartest engineers in the world." Then, he joked "and at the same time to make sure we don't create SkyNet."

The audience laughed, but he was, perhaps inadvertently, alluding to a serious issue. Issac Asimov wrote of Gaia, a sentient planet, and, while the Internet may be the embryonic nervous system of our planet, I am less worried about Musk creating SkyNet than creating Comcast on Steroids.

Two companies, Musk's SpaceX and Greg Wyler's OneWeb, are competing to provide Internet connectivity in locations that are now unconnected -- as Wyler puts it, to connect "the other three billion." If one or both succeed, we might have have a monopoly or oligopoly ISP serving half the Earth's population.

As a Time-Warner Cable Internet customer, that worries me. They would be able to charge monopoly-level prices and offer the same last-place customer satisfaction as American ISPs. They would be global companies with political power and the ability to control half the world's information -- a combination of the Koch brothers, Fox News and Comcast.

Do these potentially global service providers require unique regulation and, if so, what should it be and who has the power to do it?

What might the regulation be? I can ask the question, but neither I nor anyone else knows The Answer; however, one suggestion is to keep both SpaceX and OneWeb out of the retail Internet service market -- restrict them to providing wholesale transport service on an equal basis to any would-be retail ISP. Even if only one of the two companies succeed, that would allow for retail competition and would help out with the monopoly price and crummy service issues.

A possible approach to avoiding political abuse would be to prohibit them from refusing service to any retail ISP in any nation.

Regardless of what we wish to do, who has the authority to create and enforce such regulations? Musk said SpaceX has the ITU's permission to launch the satellites and recognized that he will have to negotiate for the right to provide service on a country by country basis. SpaceX and OneWeb are both US corporations and therefore subject to US law, but is it right for global infrastructure to be regulated by a single nation?

Lest this sound too negative, I hope SpaceX and OneWeb both succeed in connecting the other three billion people on the planet -- the benefit to mankind will outweigh the difficulty of defining acceptable, effective policy.

Update 1/31/2015

Jason Koebler compares Elon Musk to the 19th century railroad barons, saying that being the first to develop technology to soft-land and reuse rockets will give him an unassailable first-mover advantage in space -- for imaging, communication and other applications.


Elon Musk with President Obama

Saturday, January 03, 2015

I'm on vacation

You will not see new posts on this blog before January 21.

CIS 471: Why I have not been posting on this blog lately: too busy with events in Cuba

Cuba has been in the news since President Obama announced changes in our Cuba policy and agreed to the prisoner exchange that freed Alan Gross, who was serving a 15 year sentence for bringing tech equipment into Cuba.

I've not posted anything on this blog for several weeks because I have been busy with recent events on another blog I maintain on the Internet in Cuba. The following are my recent posts concerning Alan Gross and the future of the Internet in Cuba. They are in chronological order, beginning with a November 11 post asking whether Gross was about to be freed:

(for background on the case -- what Gross brought into Cuba, its technical and propaganda importance, his incarceration, court cases, and negotiations for his release, click here.)

Alan Gross brought three of these kits into Cuba.

Alan Gross and his wife Judy just after his release from prison

Apple store vs. Microsoft store

Why is the Apple store jammed and the Microsoft store nearly empty?

On December 27, I went to the Microsoft store in the Century City mall in Los Angeles to take a look at low cost laptops I had heard reviewed favorably on a podcast, thinking I might get one to take on an upcoming trip.

The sales people were friendly and left me alone while I played with a variety of computers for around half an hour. This is what the store looked like:


It turned out the cheap laptops were too cheesy so I left and walked around the corner to the Apple store:


The store was noisy and jammed and there was a roped-off line of people waiting to be allowed in when others left.

The Microsoft store had ultrabooks with great keyboards, trackpads and touch screens and a variety of all-in-one computers. The product quality ranged from those cheesy laptops to very nice machines that were better deals than comparable Apple computers. You could walk right up and talk to a tech support or sales person in the Microsoft store, but needed an appointment to talk with one of the tech support "geniuses" in the Apple store.

How do you explain the difference? Is it all due to the iPhone?

Saturday, December 20, 2014

A digression -- a joke and some cool images on US-Cuba relations

This post is off topic -- not about the Internet per se -- but the joke cracked me up and the image gallery accompanying this NY Times article are a terrific recapitulation of US v Cuba since 1959.


Click here for the image gallery