Live coverage: Atlas 5 countdown and launch journal

Russia’s decision to partner with China on a planned lunar research station, and not join the U.S.-led Artemis moon program, was disappointing after more than two decades of cooperation on the International Space Station, says NASA’s top human spaceflight official.

After some long-distance troubleshooting, NASA’s Ingenuity Mars helicopter will attempt the first flight of its kind on another world Monday in a demonstration that could open the door to a new era of interplanetary aerial scouts. Watch live at 6:15 a.m. EDT (1015 GMT) Monday as NASA officials receive signals confirming the outcome of the flight attempt.

A United Launch Alliance Delta 4 rocket lifted off from Cape Canaveral at 8:26 p.m. EDT Friday (0026 GMT Saturday) with the U.S. Air Force’s tenth Wideband Global SATCOM satellite, extending the reach of the military’s highest-capacity satellite communications network.