The universe is vast and teeming with stars – but if intelligent life exists, it may not be able to visit Earth.

Astronomers are baffled by 3I/ATLAS, a newly discovered interstellar object that appears to be defying the basic laws of celestial motion. Instead of drifting naturally through space, the mysterious ...

How can fission-powered propulsion help advance deep space exploration, specifically to the outer planets like Jupiter, Saturn, Uranus, and Neptune? This is what a recent study presented at the 56th ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Every year, companies and space agencies launch ...

In the profound silence of the cosmos, a provocative question lingers: if we are not alone, do our celestial neighbours also look to the heavens for meaning? While the search for extraterrestrial ...