While NASA's James Webb Telescope and other instruments have already spotted abundant water vapor, carbon monoxide and carbon ...

Comet Lemmon was discovered in January 2025 and made its closest approach to Earth in late October 2025. But by November 2025 ...

Scientists have been cataloging comet 3I/ATLAS’s journey through the Solar System since July, tracking major milestones as ...

Interstellar comet 3I/ATLAS will make its closest approach to Earth on Friday. New X-ray images could shed light on its ...

Comet 3I/ATLAS, the third interstellar object ever detected, will swing closest to Earth overnight from Thursday to Friday ...

Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what ...

The space object, which was only recently discovered by scientists, will pass closest to Earth on Friday, December 19. Here's ...

Interstellar comet 3I/ATLAS will fly by our planet at a safe distance of 1.8 astronomical units (roughly 167 million miles or ...

The Hubble Space Telescope and the Jupiter Icy Moons Explorer have captured fresh images of an interstellar comet as the ...

Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS ...

Interstellar Comet 3I/ATLAS makes its closest Earth pass early on Dec. 19. Here's what astronomers know about its origin and speed.