How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here ...

Its closest approach to the Sun will occur around October 30, just inside Mars' orbit, at 1.4 AU, before it continues its ...

The first interstellar object spotted in our Solar System was the cigar-shaped ‘Oumuamua, discovered in 2017 by the ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

Is the universe communicating with us through the messages of cosmic travelers? The latest find of 3I/ATLAS, an object ...

A comet has entered the Solar System from interstellar space and will pass through the inner planets later this year, NASA ...

Gain access to all articles, ad-free browsing, exclusive content, The Vault, and other benefits! Katy is Managing Editor at ...

The James Webb Space Telescope (JWST) has unlocked the depths of interstellar space with unprecedented clarity, offering humanity a high-resolution window into the cosmos. Harnessing this newfound ...

To Unlock Interstellar Travel, Scientists Are Building the World’s Most Powerful Laser Beam A lightsail built in one day could travel at 20 percent the speed of light. That shouldn’t be possible.

Astronomers manning an asteroid warning system caught a glimpse of a large, bright object zipping through the solar system ...

An illustration of one of the twin Voyager spacecraft, which rely on radioisotope thermoelectric generators to convert heat into electricity, in interstellar space. Credit: NASA/JPL-Caltech When ...