Video: Minotaur 4 launch replay

The latest prototype of SpaceX’s  Starship launch vehicle — Starship SN10 — took off from the company’s South Texas test site and flew to an altitude of more than 30,000 feet Wednesday, then descended to a controlled vertical landing after two previous test vehicles crashed at touchdown. Minutes later, the 16-story test rocket exploded in a fireball, but the test flight appeared to be a major step forward in the early stages of the Starship program.

A classified satellite code-named Zuma, launched Sunday night atop a SpaceX Falcon 9 rocket, may have suffered a mission-ending failure during or shortly after the climb to space, according to news accounts Monday evening.

A Ukrainian-built Zenit booster and a Russian-made Fregat upper stage launched with an Angolan communications satellite Tuesday from the Baikonur Cosmodrome in Kazakhstan, but engineers lost contact with the spacecraft soon after its deployment in orbit more than 22,000 miles above Earth.