Scientists have proposed two experimental spacecraft that could reach one of the farthest known objects in the solar system ...

A dwarf planet is classified as a celestial body that orbits the sun that has enough mass and gravity to be mostly round, but unlike other planets, has not cleared its orbital path of asteroids ...

A potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the ...

A dwarf planet is "classified as a celestial body that orbits the sun that has enough mass and gravity to be mostly round, but unlike other planets, has not cleared its orbital path of asteroids and ...

When astronomers first discovered exoplanets, they found massive ones orbiting large stars. The technology to detect smaller planets around low-mass, dim red dwarfs took time to develop. By the ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit ...

Our solar system is a pretty wild place, full of amazing stuff. From the giant Sun to the tiny rocks floating around, there’s ...

Studies of 15 M-type stars have revealed new insights into the potential presence of exoplanets. A new study led by ...

Computer simulations show that planets could be flung out of the inner solar system, supporting the possible existence of a ...

Over the last few years, the term "Goldilocks zone" has come to be widely used to describe the range of distances from a star ...