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

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

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 ...