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.

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

Nobody was using the term Dwarf Planet until 2006 when the International Astronomical Union (IAU) had a vote to redefine what ...

Charon is the largest moon of the dwarf planet Pluto, but calling it a moon ... Pluto has a mass of 1.3 x 10 22 kilograms and a diameter of 1,477 miles (2,377 kilometers), whereas Charon has ...

The organic material found in a few areas on the surface of dwarf planet Ceres is probably of exogenic origin. Impacting ...

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 ...