Live coverage: Kennedy Space Center to reopen Friday

United Launch Alliance said Monday it did not submit a proposal in a competition to launch a U.S. Air Force GPS navigation satellite, apparently relinquishing the contract to rival SpaceX, the only other company certified to launch the mission.

NASA’s Ingenuity helicopter is being lowered from the belly of the Perseverance rover this week as ground teams run through a choreographed long-distance command sequence to safely release the $80 million rotorcraft onto the surface of Mars.

A Falcon 9 rocket core recovered after last week’s launch of a Thai communications satellite returned to port in Florida on Thursday as SpaceX preps a separate rocket structure for tests to prove it can withstand multiple missions and mulls pricing of a previously-flown rocket, targeting a re-flight of a used booster by the end of the summer.