Elon Musk, SpaceX’s founder and CEO, did his best to set low expectations heading into the first test flight of the gargantuan Super Heavy booster and Starship rocket this week. “Just don’t blow up the launch pad,” Musk said.

A SpaceX-owned Dragon cargo craft left the International Space Station on Friday and flew back to Earth for a parachute-assisted splashdown in the Pacific Ocean with a dozen mice and more than 3,000 pounds of experiment specimens and space hardware.

A Northrop Grumman Cygnus supply ship carrying more than 7,200 pounds of provisions and experiments approached the International Space Station two days after its launch from Virginia, moving close enough for capture by the station’s robotic arm at 5:28 a.m. EST (1028 GMT) Monday.