Earth is one of the four rocky inner planets. Scientists have been studying Earth’s neighbors since ancient astronomers traced their paths in the night sky an

Earth is one of the four rocky inner planets. Scientists have been studying Earth’s neighbors since ancient astronomers traced their paths in the night sky an

You might think that Earth is a big planet, but it’s nothing compared to our solar system’s gas giants—Jupiter, Saturn, Uranus, and Neptune. Jupiter itsel

Most asteroids come from a “belt” that orbits the sun between the orbits of Mars and Jupiter. Comets are born in the frozen reaches beyond Neptune. Both are

Mars is known as the Red Planet. It is the fourth planet from the Sun and the only planet where humans have landed rovers. From the biggest volcano in the solar