Water isn't just delivered to planets by comets and asteroids — it can also be forged as worlds form, a new study finds.

Experiments at high temperatures and pressures reveal chemistry that can generate water on the surface of exoplanets ...

As telescopes have become more powerful, it’s turned out our solar system is not the only game in town: There are millions of ...

Uranus is the only planet that rotates sideways with a 98-degree tilt. Learn why Uranus spins this way, how its seasons last ...

Learn how exoplanets are discovered, what makes planets beyond our solar system unique, and how they drive the ongoing search ...

Four billion years ago, Mars’ fate was sealed deep within its core. When the planet’s once-vigorous magnetic dynamo sputtered ...

Mars is about to receive a double dose of attention. This weekend, a pair of identical NASA satellites will launch together ...

The first map of magnetic fields in a planetary formation disk has been created, revealing how invisible forces shape the ...

Astronomers now understand that water-rich planets can form internally, even close to stars. A new study reveals that ...

Astronomers using the W. M. Keck Observatory on Mauna Kea, Hawaiʻi, have spotted such a gruesome glimpse of stellar ...

Scientists who study comets are struggling to keep up with popular speculation that the interstellar object 3I/ATLAS was sent ...

Far from Earth, drifting between the stars, lies a quiet ocean of carbon. Astronomers call it the interstellar medium, a vast realm where simple and complex molecules float through cold clouds of gas ...