Planets are usually defined by the star they orbit. Take away the star, and a planet becomes almost impossible to find. This is because almost every method astronomers use to detect planets depends on ...

For centuries, humans have gazed at the stars, trying to understand what lies beyond the familiar planets we know. From Mercury’s blazing orbit near the Sun to Neptune’s icy edge, our Solar System has ...

This video is about the interesting and often-misunderstood story of the asteroids, and how they lost their planet-hood status; more recently than you may think!