SES

SpaceX’s second Falcon 9 flight of the year lifted off Jan. 31 from Cape Canaveral with GovSat 1, a U.S.-built satellite funded by SES and the government of Luxembourg to provide secure communications for military and civil defense authorities.

A SpaceX Falcon 9 launcher boosted a 4.7-ton military-grade communications satellite for SES and the Luxembourg government toward a perch 22,300 miles over the equator following a spectacular late afternoon liftoff Tuesday from Florida’s Space Coast, clearing the last mission off the launch company’s manifest before the long-awaited debut of the massive Falcon Heavy rocket.

SpaceX’s launch director halted a countdown Tuesday to replace a sensor on the upper stage of a Falcon 9 rocket set to blast off with the GovSat 1 communications craft, the product of a joint venture between the commercial satellite operator SES and the government of Luxembourg.