Mars. From forming black holes to phantom dark energy, discover the cosmic mysteries astronomers uncovered last year.

Unlike the comets that call our solar system home, 3I/ATLAS is a cosmic nomad on a hyperbolic trajectory — a one-time flyby ...

Researchers used the Green Bank Telescope to study the interstellar comet and found that it exhibits typical cometary behavior, with no unusual features detected ...

Hubble's latest images of interstellar comet 3I/ATLAS reveal sustained, jet-like eruptions and a carbon dioxide-rich coma ...

Learn about the 3I/ATLAS mystery as Harvard's Avi Loeb reveals 'wobbling jets' that could suggest the interstellar visitor is ...

Harvard scientist Avi Loeb presents chilling theories that interstellar object 3I/ATLAS is alien technology, citing anomalies ...

With 3I/ATLAS streaking away from our planet, speculation remains as to whether the interstellar comet is alien or not.

Scientists have sought out and detected radio emissions from from interstellar comet 3I/ATLAS, all but confirming that it has natural origins.

On Friday, December 19, 2025, comet 3I/ATLAS will make its closest approach to Earth. 3I/ATLAS can be found near the constellation Leo when it reaches its closest distance to Earth, overnight on ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

You're going to see a lot of stories in 2026 claiming soon-to-be-achieved science and tech advances. Here are the ones just ...

NASA has pinpointed the exact moment when interstellar comet 3I/ATLAS, the object suspected to be an alien spacecraft, made its closest approach to Earth.