NASA has formally commented (PDF) on a request by a U.S. company to build a mega-constellation of satellites at an altitude of 720 km above the Earth's surface, citing concerns about collisions. This appears to be the first time that NASA has publicly commented on such an application for market access, which is pending before the…

Elon Musk spoke about his vision of a brighter future for humanity on Saturday evening in South Texas. Musk acknowledged that there are a lot of problems here on Earth, and it is important for those to get fixed. But it is also important to give people hope for the future and a sense of…

1045pm ET Update: About 15 minutes before the Falcon 9 rocket was due to liftoff on Wednesday evening from Florida, the launch was scrubbed. The culprit? Unfavorable upper-level winds. Fortunately, SpaceX has a back-up window that opens again at 10:30pm ET Thursday. Original post: If the weather and Falcon 9 rocket cooperate, the first batch…