To reach Earth’s closest star system, Alpha Centauri, scientists are building a laser-powered spacecraft. To pull off ...

Is interstellar object 3I/ATLAS an 'alien probe'? Harvard's Avi Loeb cites a 0.005% chance 'hiding' path and rocket-like ...

Engineers are developing a concept for interstellar travel using a swarm of 1,000 ultra-light "laser sails." The mission aims to send these sails to Proxima b, an exoplanet 4.25 light-years away, ...

The interstellar comet 3I/Atlas reached its closest point to the sun. Here's how to follow the rest of its journey away from ...

Comet 3I/ATLAS is one of only three interstellar objects ever detected in our solar system. Scientists are working to determine the comet's size and physical characteristics as it passes through our ...

China has shared stunning images of comet 3I/ATLAS captured near Mars. The Chinese Tianwen-1 orbiter provided the first views ...

We normally think of interstellar flight in terms of reaching a single target. The usual destination is one of the Alpha Centauri stars, and because we know of a terrestrial-mass planet there, Proxima ...

A newly observed interstellar object, 3I/ATLAS, contains iron-free nickel alloys — a composition former NASA surgeon Dr. Gregory Rogers calls 'impossible' for a natural body.