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 ...

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study's School of Natural ...

A newly discovered house-size asteroid is set to make a close, yet harmless approach to Earth today (May 21), passing within ...

The Carnegie Institution for Science and the International Astronomical Union’s Minor Planet Center has announced the discovery of dwarf planet 2015, the world with an extremely distant aphelion ...

"The brighter the object, usually the bigger it is," said Brian Marsden, director of the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts. "If it's bright ...