NASA's long-awaited moonshot with astronauts is off until at least March because of hydrogen fuel leaks that marred the dress rehearsal of its giant new rocket. It's the same problem that delayed the Space Launch System rocket's debut three years ago.

"The fundamental elements of generative AI are showing a lot of promise in streamlining the pillars of autonomous navigation for off-planet driving."

NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts.

NASA’s first crewed lunar mission in more than 50 years won’t be getting underway this month after all. It had been targeting February 6 for the launch of the much-anticipated Artemis II mission that will take four astronauts on a flight around the moon,

Sign up for CNN Science’s pop-up newsletter covering NASA’s Artemis II mission, which will take four astronauts on a 10-day journey around the moon and back.

NASA's Artemis II mission reached a critical milestone this week as teams conducted a wet dress rehearsal of the Space Launch System rocket and Orion spacecraft during an unusually intense blast of cold air surged across Florida, delivering record-breaking low temperatures to the Sunshine State.

NASA has released its monthly skywatching update on what to look out for over the coming weeks, and you can probably guess which event tops the list. That’s right: the Artemis II mission. NASA is about to launch a crew on a voyage around the moon in what will be the first human lunar mission

Ahead of the launch of Artemis II, the first crewed mission to the moon in more than 50 years, astronauts share the movies that capture the danger, teamwork, and wonder of spaceflight. Their picks offer cinematic glimpses into the real challenges and triumphs of exploring beyond Earth.