Planets are primarily formed of the same materials

Planets are primarily formed of the same materials as stars and moons, and with millions upon billions of them (we believe), it’s difficult to comprehend how many there are in the cosmos. There were only eight planets in our solar system until recently, but that is no longer the case. We are nearly constantly discovering new planets outside of the solar system thanks to technological advancements in recent years. Know more here in details

Planets