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

But what’s it like on other planets? There are eight planets in our solar system ... The largest object is the asteroid belt is the dwarf planet Ceres, which is 950km in diameter (that's ...

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

Narrator: Serious scientists, like myself, believe our solar system was formed by the collapse of a giant cloud of gas and rock and is held together by the gravitational pull of the Sun.

Using AI to comb through data gathered by NASA's Dawn spacecraft, scientists have conducted a detailed scan of the dwarf planet Ceres to map regions rich in organic molecules to determine whether ...