Live coverage: Mission control loses contact with Indian moon lander

A European Ariane 5 rocket, burning a cryogenic mixture of liquid hydrogen and liquid oxygen, thundered into the sky over French Guiana at dusk Tuesday with two communications relay satellites to serve the Arab world and India.

Officials have delayed the launch of a United Launch Alliance Atlas 5 rocket with the European-built Solar Orbiter spacecraft from Cape Canaveral by two days to Feb. 7, a ripple effect from time spent fixing a minor issue last week during a launch vehicle countdown dress rehearsal.

SpaceX’s second Falcon Heavy rocket lifted off Thursday with the Arabsat 6A communications satellite. The world’s most powerful operational launcher lifted off from pad 39A at NASA’s Kennedy Space Center in Florida at 6:35 p.m. EDT (2235 GMT), and its three first stage boosters landed less than 10 minutes later — two back at Cape Canaveral and one on a drone ship at sea.