As a result of the International Astronomical Union’s 2006 demotion of Pluto from planet to dwarf planet, our solar system ...

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...

This discovery doesn’t just reveal the makeup of one strange object. It could change what we know about how the entire Kuiper Belt—and even the solar system—formed. Scientists believe that ...

Pluto, Eris, and Haumea are the celebrity residents, but hundreds of thousands of smaller objects lurk there too. Kuiper Belt objects (KBOs) hold clues about planetary migration and the chemistry ...

A group of astronomers from across the globe, including a team from the University of Washington and led by Queen's ...

In 2016, astronomers proposed that our solar system could harbor a stealthy ninth planet based on a strange clustering of orbits they detected among distant Kuiper Belt objects. They suggested the ...

Volk and Malhotra base their prediction on a comparison of the orbits of 800 objects in and beyond the classical Kuiper Belt — where Pluto and hundreds of thousands of comets and icy rocks lie ...

Astronomers have revealed new research showing that millions of new solar system objects are likely to be detected by a brand-new facility, which is expected to come online later this year.