It wasn't aliens after all — an astrochemist and an astronomer have teamed up to explain why the interstellar object 1I/'Oumuamua behaved the way it did.
Prebiotic compounds previously found in meteorites have now turned up in pristine samples from the asteroid Ryugu, confirming their extraterrestrial origin.
The European Space Agency is working to get its ambitious Mars rover back on track after complex delays.
Phone battery dead? Learn how to tell time with the Big Dipper. Also, don't miss a remarkable transit of Ceres in front of the bright spiral galaxy M100.
The newest observations will help astronomers understand a planetary-scale wave in the atmosphere of our sister planet.
Two decades of observations show a dusty gas cloud elongating as it approaches our galaxy's supermassive black hole.
Five new studies give a full accounting of the aftermath of the impact of NASA's DART mission on a nearby asteroid.
As the Northern Hemisphere edges toward the March equinox and beyond, stargazers have an abundance of brilliant stars overhead as darkness falls. Anchoring the celestial parade is Orion, the Hunter. Download or listen to this month’s Sky Tour to learn about — and how to spot — the Winter Hexagon of big, beautiful winter stars.
Astronomers have taken a closer look at a system containing three stars and five planets and may have solved a mystery around its formation.