ORLANDO, Fla. — The four crew of Polaris Dawn can breathe easy again after having vented the entire atmosphere of their SpaceX Crew Dragon so its commander and billionaire Jared Isaacman along with crewmate and…

SAN DIEGO — UC San Diego graduate Jessica Meir and fellow astronaut Christina Koch made history before most people woke up Friday, becoming the first all-female team of astronauts to perform a spacewalk. Meir and…

CAPE CANAVERAL, Fla. (AP) — Astronauts replaced oversized batteries outside the International Space Station on Friday, as news broke of the death of the world’s first spacewalker. NASA interrupted live TV coverage of its second…