Since the James Webb Space Telescope (JWST) began science operations, astronomers have observed galaxies that existed more ...

(Another space telescope, Fermi, replaced it in 2008.) But Spitzer and Chandra are still up—way up—and running, unlocking secrets of the universe and surpassing the hopes of the people who ...

NASA's Space Launch System (SLS) continues to make progress toward its Artemis 2 mission planned for next year; SLS is ...

The rotating model, which does not break any known law of physics, suggests the universe could spin around once every 500 billion years. This would be far too slowly to detect easily, but enough to ...