Smithsonian researchers analyzed fragments of the near-Earth asteroid and discovered water-rich clays that hint at a distant ...

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

Most planet-forming disks have warps that can lead to planets on inclined orbits, which could explain where the tilt of Earth's orbit came from.

Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet ...

Recent research suggests a warp in the orbital plane of Trans-Neptunian Objects (TNOs) between 80 and 400 AU, hinting at the ...

Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper ...

The new image, which shows Earth along with an even smaller point of light coming from the moon, harkens back to Carl Sagan's ...

A study suggests an Earth-sized planet, dubbed Planet Y, may exist beyond Neptune, affecting the orbits of icy objects in the ...

Earth is so far the only known planet on which life exists—with liquid water and a stable atmosphere. However, the conditions were not conducive to life when it formed. The gas-dust cloud from which ...

Astronomers have discovered a brand new type of planet outside our solar system that, even in its infancy, is already bigger ...

NASA’s OSIRIS-REx samples from asteroid Bennu reveal stardust, water-driven chemistry, and clues to life’s origins in the ...

Scientists theorised about the possibility of Planet Y after spotting a strange ‘warp’ in the Kuiper belt, which is a ring of ...