Explore Our Solar System

Solar System Formation

Solar system formation began billions of years ago, when gases and dust began to come together ...Read more

The Sun is the closest star to Earth and is the center of our solar system. A giant, spinning ...Read more

By the current count of astronomers, our solar system includes 8 planets and 5 dwarf planets. ...Read more

In 2006 the International Astronomical Union (IAU) approved a new classification scheme for ...Read more

Asteroids are small bodies that are believed to be left over from the beginning of the solar ...Read more

Meteors are streaks of light, usually lasting just a few seconds, which people occasionally ...Read more

Not long ago, many people thought that comets were a sign that something bad was about to ...Read more

The areas around the North and South Poles of planets, moons, and even the Sun are often interesting ...Read more

Make important cultural connections about the Sun, planets, and the Moon. ...Read more

Who discovered the planets? For many of the planets in the solar system, we'll never know! ...Read more