Live coverage: 400th Proton rocket takes off with Russian satellite

The launch of a Russian Progress cargo ship aboard a Soyuz rocket was aborted in the final minute of the countdown Sunday, forcing a delay of at least two days in the start of a resupply and refueling mission to the International Space Station.

SpaceX test-fired a Falcon 9 rocket Friday at Cape Canaveral in preparation for liftoff as soon as Sunday with the company’s fifth batch of Starlink broadband satellites.

A Russian-built satellite hosting an array of X-ray telescopes is awaiting launch Friday from the Baikonur Cosmodrome in Kazakhstan on a mission to measure the mass and distance of colossal clusters of galaxies throughout the universe.