Astronomers have discovered two exoplanets around TOI-1453, a star about 250 light years away. These two exoplanets, a super-Earth and a sub-Neptune, are common in the galaxy, yet are absent from our ...

While unraveling the mystery of why some planet-forming disks fall onto their stars, an astronomer stumbled upon a surprise: ...

A weak magnetic field likely attracted matter inward, contributing to the formation of the outer planetary bodies, from ...

Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in ...

New research suggests that a binary pair of Kuiper Belt objects, known as the Altjira system, is actually made up of three ...

Scientists have discovered a potential three-body system in the Kuiper Belt, the Altjira system, challenging planet-formation theories.

The Kuiper Belt is a vast region beyond Neptune filled with icy remnants from the early solar system. Over 3,000 KBOs have ...

Can asteroids orbit each other in pairs of three, also called a three-body or triple system, like stars? This is what a ...

Explore HubbleHubble HomeOverviewAbout HubbleThe History of HubbleHubble TimelineWhy Have a Telescope in Space?Hubble by the NumbersAt the ...

It must have enough mass to force its shape into a sphere. It must clear competing bodies and materials out of its orbital path. Because tiny Pluto hasn't cleared the Kuiper Belt, it's no longer ...