Live coverage: International crew lands in Kazakhstan

The next quartet bound for the International Space Station will wait a bit longer before they can punch their ticket to space after Falcon Heavy delays pushed back the launch of the next Crew Dragon mission, NASA said Tuesday.

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.

Two astronauts floated outside the International Space Station early Friday for the first of four planned spacewalks to wrap up a complex multi-year job to replace 48 aging batteries in the lab’s solar power system with 24 more powerful lithium-ion units.