Rogue planets do not orbit around a star, but instead wander through the galaxy aimlessly. NASA estimates there are billions ...

The rings of Saturn are among the wonders of our solar system, with a diameter of roughly 175,000 miles (280,000 kilometers) ...

This long-duration comet will make its closest approach to Earth this fall, before disappearing into the outer solar system ...

Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a ...

“Overall, our findings challenge the conventional classification of Uranus and Neptune as ’ice giants’ and underscore the ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its nebular gas had been consumed—Earth's solar system and its planets looked more ...

NASA scientists are investigating an unexplained energy burst from 3I/ATLAS, an interstellar comet emitting unusual gases and ...

"In spring, this ice begins to warm up and sublimate. The last remnants of this ice are located on the shaded side of the ...

Scientists have shown that Earth’s basic chemistry solidified within just three million years of the Solar System’s formation. Initially, the planet was barren and inhospitable, missing water and ...

A mysterious object spotted hurtling toward Earth has sparked a wave of global panic and wild alien invasion theories online.

Anyone who studies planetary formation would relish the opportunity to get a close-up look at an interstellar object. Sending ...

Scientists created this new phase of ice—known as Ice XXI—by supercompressing water to 20,000 times normal pressure in just ...