How did the solar system form?
The solar system formed about 4.5 billion years ago. Scientists have developed three models of how it happened.
Our solar system is filled with planets, asteroids, comets, the sun and more, making it a wealth of discoveries waiting to be found. See the latest discoveries from across our solar system here.
Explore the planets in our solar system: Earth, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune