For over a century, researchers have been puzzled by strange gravitational forces seemingly pulling on the orbits of Neptune and Uranus in the distant reaches of our solar system. While some have ...

Currently there is a third “interstellar interloper” now passing through the solar system designated as 3i/ATLAS, for the ...

A team looking at the dynamics of objects in the Kuiper belt, the ring-shaped region of icy bodies well beyond the orbit of ...

Take a journey to the outer edges of the solar system and discover how planets, comets, and icy fragments form an invisible ...

If you’re wondering about the sunny view from the Oort Cloud, that vast sphere of debris that surrounds our solar system, here it is. As we told you yesterday, scientists now believe this remote, cold ...

The self-professed "Pluto Killer" is at it again. Dr. Michael Brown is now reminiscing about the good old days when one could scour through sky survey data and discover big bright objects in the ...

Comet ISON races toward the inner solar system across a backdrop of stars and galaxies in this image taken by the Hubble Space Telescope on April 30, 2013. Comet ISON races toward the inner solar ...

Astronomers have identified an icy, red, planet-like object orbiting the sun 8 billion miles away, a distance that is nearly three times as far as Pluto and stretches the limits of the solar system ...