The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

The building blocks of life could have been delivered to solar system dwarf planet Ceres by one or more space rocks from the outer asteroid belt.

Arizona in order to precisely measure the object’s orbit. 2015 TG387’s orbit is observed to be similar to other dwarf planets such as Sedna and 2012 VP113, which also are extremely elliptical.

Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment of organic molecules that ...

Some notable examples include (in order of distance): As you can ... More importantly, a planet orbiting a red dwarf star must have a magnetic field to protect it. On Earth, the presence of ...

When we first began searching for planets around other stars, one of the surprising discoveries was that there are planets orbiting white dwarfs. The first exoplanets we ever discovered were white ...