Physicist Brian Cox has confirmed that Comet 3I/ATLAS — an interstellar traveller predating our Sun — is a natural object composed of ice, dust, and carbon dioxide, and not of extraterrestrial design.

A newly discovered interstellar object is racing toward our solar system, capturing the attention of scientists worldwide. Unlike other known celestial bodies, this object appears to be emitting its ...

The vast majority of matter is dark – invisible until it is detected only through its gravitational effects. The newly discovered object could be a clump of dark matter, or it could also be a compact, ...

When two massive objects – like black holes or neutron stars – merge, they warp space and time. Mark Garlick/Science Photo Library Scientists first detected ripples in space known as gravitational ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Chad Hanna, Penn State (THE CONVERSATION) Scientists first detected ripples in space ...