This is amazing research by Nadia Heninger and her co-authors Wenyi Morty Zhang, Annie Dai, Keegan Ryan, Dave Levin and Aaron Schulman. TL;DR a huge number of satellite links over our heads are totally unencrypted.
The overall US warming trend (around 0.5F per decade since 1970 in max, min, and mean temperatures) is robust in every dataset, raw or adjusted, satellite or surface.
At even $500/kg, launch cost is only 5% of the total satellite deployment cost, so a lunar mass driver is unlikely to drastically improve the economics of space-based AI, by reducing launch costs.
This raises public concerns that, at this late date, DoD might not have such a specification, whether classified or unclassified, even for its own internal use.
If a Chinese spacecraft can dock with a friendly satellite to refuel, repair, or transport it, the same robotic arm can also disable a US satellite’s solar panels and antennas. Alternatively, China can use these spacecraft to tow satellites into locations where they can, at best, only sub-optimally perform intended duties such as early warning, surveillance, or geolocation.
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