Asteroids are rocky objects that orbit the Sun, just like planets do. There are millions of asteroids of very different shapes and sizes. Some are almost spheres, like planets, but most are ...

As shocking as it sounds today, prior to the 1990s, scientists couldn't be certain that stars beyond the sun also had planets orbiting ... orbital parameters and size, the graphic adding texture ...

Described as one of the “hottest and angriest group of planets in the galaxy,” hot Jupiters are around the mass and size of Jupiter but orbit closer to their star than Mercury does to the Sun.

concentrated on understanding the intricate dynamics leading to the reduction in size of specific sub-Neptune planets. Christiansen's team suggested a compelling link between the cores of select ...