Q&A with Keith Gendreau, principal investigator of the first X-ray space communications experiment (members only)

This is the third and final launch that Amazon booked onboard a SpaceX Falcon 9 rocket. Liftoff from pad 40 at Cape Canaveral Space Force Station is scheduled for no earlier than Oct. 12 at 8:29 p.m. EDT (0029 UTC).

Two astronauts floated outside the International Space Station early Tuesday and replaced one of the grapple fixtures on the end of the lab’s robot arm, the first of two excursions over the next week to complete a complex overhaul that began with a pair of spacewalks last October.

NASA announced Monday that the launch of the first operational crew rotation mission to the International Space Station on SpaceX’s Crew Dragon spacecraft is set for the predawn hours of Halloween, eight days later than previously planned.