Live coverage: India’s first space observatory in orbit

SpaceX performed a hold-down test-firing Jan. 20 of a Falcon 9 rocket at Cape Canaveral in preparation for a launch with 60 Starlink broadband satellites, but officials delayed the missions’s planned launch Tuesday due to extreme weather in the downrange recovery zone for the first stage and payload fairing. The next possible launch attempt is expected at 9:49 a.m. EST (1449 GMT) Monday.

Europe’s LISA Pathfinder mission crafted to demonstrate the ability to detect gravitational waves — theorized ubiquitous cosmic signals that have so far eluded discovery — has arrived at its operating post around the L1 Lagrange point nearly a million miles from Earth.

A SpaceX Falcon 9 rocket lifted off from Vandenberg Space Force Base in California at 12:26 p.m. PDT (3:26 p.m. EDT; 1926 GMT) Friday with another batch of 52 Starlink internet satellites. The mission is the first of two SpaceX launches scheduled Friday, with another Falcon 9 poised for liftoff from Florida a little more than four hours later.