Astra to loft 1st mission for DARPA Launch Challenge today: Here's how to watch live

Astra to loft 1st mission for DARPA Launch Challenge today: Here's how to watch live  Space.comLive coverage: Astra preps rocket for first orbital launch attempt  Spaceflight NowHow a California startup aims to prove it could launch orbital rockets on a daily basis  PBS NewsHourRockets secretly built near San Francisco set to blast off for DARPA Challenge  KRON4View Full coverage on Google News

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