Researchers at MIT suggest that the microscopic "primordial black holes" could be blasting through our solar system at least ...

Pluto was reclassified as a dwarf planet in 2006. The Kuiper Belt is believed to be the source of most periodic comets. Astronomers have detected debris disks around many other stars, which are ...

This discovery challenges established theories of solar system formation and could indicate a second ... New Horizons is the ...

A planet swings in front of its star, dimming the starlight we see. Events like these, called transits, provide us with ...

Mexico, N.Y. – Malaki Sandejas, 8, loves a dwarf planet. Sitting next to his mom on their couch, he rattles off the five in our solar system. “The dwarf planets are Haumea, Makemake, Eris, Ceres and ...

R esearchers looking for objects in the Kuiper Belt – the donut-shaped region beyond the orbit of Neptune containing icy ...

"The most exciting part of the HSC was the discovery of 11 objects at distances beyond the known Kuiper Belt," said Yoshida.

A passing star may have kicked the weird moons of giant planets like Jupiter and Saturn into place, new research suggests.

Probably 99% of people know Everest is the tallest mountain in the world, but do you know the tallest mountain in the ...

Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did ...

NASA’s New Horizons spacecraft was launched in 2006 with the critical mission of observing the surfaces of outer Solar System ...