Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

A surprising new theory claims Earth’s building blocks were supernova ice, not stardust. This could change everything.

For only the second time ever, a collision between two asteroids has been observed around an alien star not too far beyond ...

It is a rare occurrence indeed for a theory to be turned upside down by the cold accuracy of observation, until the Hubble ...

When you look up at the night sky, planets seem calm and fixed. But a new study shows that nearby planetary systems can be ...

The existence of the body 3I/ATLAS increasingly raises doubts not only among researchers, but also among people who are ...

The discovery is the first direct observational confirmation of a theory for how young stars feed on, and then explosively ...

"Hubble has given us a front row seat to the chaotic processes that are shaping disks as they build new planets — processes ...

We are now beginning to better understand exoplanets as against merely discovering them. These are the exotic worlds that ...

Hubble identified the largest known protoplanetary disk, revealing a turbulent, chaotic environment with material extending ...

Understanding how the Milky Way formed means looking far beyond the bright spiral you see in the night sky. A new study led ...