Comets are not the only celestial bodies with tails. Earth and Mercury also possess them, formed by different mechanisms.

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...

A rocky exoplanet outside the Earth's solar system may have an atmosphere, according to new evidence gathered by NASA ...

NASA’s TRACERS mission begins early science measurements in Earth’s southern polar cusp, tracking magnetic reconnection and ...

Astronomers have followed 3I/ATLAS since its discovery on July 1. Hubble photographed it on July 21 from 277 million miles ...

I/ATLAS attracted attention when it was confirmed to be only the third body originating from another star system.

An exponential increase in the number of satellites placed in low-Earth orbit has brought advances in telecommunications ...

NASA has abruptly lost contact with a key spacecraft circling Mars, cutting off a scientific workhorse that has spent years ...

The Star of Bethlehem, a guiding light for the Magi, has long puzzled experts. NASA scientist Mark Matney proposes a 5 BC ...

Our planet Earth and Mercury have invisible tails stretching millions of kilometres. These cosmic tails are real phenomena.

Inside the American Museum of Natural History's glass cube, the Frederick Phineas and Sandra Priest Rose Center for Earth and ...