Q&A with Sara Seager, deputy director of science on NASA’s TESS mission (members only)

SpaceX currently has more than 9,500 Starlink satellites in low Earth orbit. Liftoff of the Starlink 17-19 mission from pad 4E at Vandenberg Space Force Base happened at 9:53:20 a.m. PST (12:53:20 p.m. EST / 1753:20 UTC).

Follow the key events of the Falcon 9 rocket’s ascent to orbit with the fifth set of 10 next-generation satellites for Iridium’s voice and data relay fleet.

The SpaceX Falcon 9 lifted off from Cape Canaveral at 5:47 p.m. EDT (2147 UTC) on Saturday, Oct. 26, breaking the record for the most number of launches from Florida’s Space Coast in a calendar year.