SpaceX has received FCC permission to launch 4,425 Starlink communications satellites between 1,110 and 1,325 km in altitude. SpaceX in a new filing is now requesting that 1,584 of those satellites be allowed at lower orbits of 550 km. Satellites at that orbit are at the upper reaches of the atmosphere and have naturally decaying orbits over several years. Starlink satellites at that elevation would therefore be easier to decommission. Satellites that fail would also fall into the atmosphere naturally.
When SpaceX received initial FCC approval, the permission was contingent upon SpaceX providing updated satellite decommissioning plans. The FCC is concerned about space debris. This new orbital plan by SpaceX may address some FCC concerns.
SpaceX’s two current test satellites, TinTin A and B, were launched into the lower orbits but expected to be boosted to higher orbits. That boost hasn’t happened, leading some observers to question whether the satellites failed. In fact SpaceX may be studying the lower orbits in greater detail.
Lower orbits would represent faster communications speeds, with latencies as low as 15 ms. Satellites would also potentially cover less of the planets surface, which would require modifications to their design.
More detailed reporting of SpaceX’s updated FCC filing is provided by The Verge.
SpaceX has posted a number of new job openings that suggest it may be developing a classified satellite network. As reported in Teslarati, the new positions require technical skills involving low-cost satellite networks but also require top secret clearances.
One reasonable explanation for these new job openings would be that the US Government is exploring new approaches to satellite networks. DARPA has previously announced funding of up to $117 million for the Blackjack program, seeking to place 20 test satellites in orbit.
SpaceX has announced current plans to raise $750 million in debt financing to support next generation rocket development as well as the Starlink program. It appears SpaceX might have its eyes on additional Starlink funding from government sources.
One enormous challenge for first-time users of the internet in developing countries is knowing what the internet is and does. If you have always lived in a technology-free environment, how are you supposed to understand, say, the Android apps on Google Play?
One solution will be the design of single purpose internet devices. Imagine a smart speaker that only tells you the weather, or a tablet that only shows football matches.
A good example of a single purpose internet device is now rolling out in the US. Facebook has launched “Portal“, a videoconferencing system that only allows calling to other Facebook users. You plug it in, link to wifi, link to Facebook, and start requesting calls. The device is powered by complex technology, including Alexa, and has a number of sophisticated design features, such as tracking your movements around a room. It only has one purpose, however: videoconference with others on Facebook.
Does some of this raise privacy issues or other objections? Probably. But the device is easy to use, and that alone may drive its popularity. Simplicity of this sort will be a precondition for internet devices across much of the planet.