The total mass loss rate and outflow speed from its 3I/Atlas surface was used to infer its mass. The mass of 3I/ATLAS must be ...

The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've ...

It's absolutely enormous. The post Mysterious Object Screaming Toward Mars Is Huge and Far More Massive Than Scientists ...

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, ...

A mysterious object hurtling through space has been identified as a rare “interstellar object,” only the third of its kind ever seen. In July, NASA reported its ATLAS (Asteroid Terrestrial-impact Last ...

The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought experiment to it, highlighting everything about it that might align with a hypothetical alien spacecraft.

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

In a new study published in the journal Research Notes of the American Astronomical Society, astronomers report the discovery ...

The Virtual Telescope Project is set to host a free YouTube stream covering the flyby starting at 7 p.m. ET (23:00 GMT) on ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. As a piece of ...