Live coverage: Ariane 5 rocket deploys satellites for Australia, India

Indian engineers are counting down to a test flight Thursday of a next-generation launcher to verify the performance of two powerful solid rocket motors, a twin-engine core booster and a prototype capsule designed for India’s nascent human spaceflight program.

SpaceX’s first Falcon Heavy launch for the U.S. Air Force took a major step closer to liftoff with a hold-down engine firing Wednesday night at launch pad 39A at NASA’s Kennedy Space Center in Florida. Liftoff with a cluster of experimental satellites and weather monitoring craft is set for June 24.

NASA’s robotic InSight spacecraft, carrying a pair of European-built science instruments, successfully landed Monday on a broad, flat equatorial Martian plain named Elysium Planitia. Touchdown was confirmed at 2:54 p.m. EST (1954 GMT) to begin a science mission focused on studying the deep interior of Mars.