Our Solar System

Fun Facts and Activities for Families
Following a hunch that there might be a missing planet in between Mars and Jupiter, early 19th-century astronomers serendipitously discovered the first asteroids. Today, spacecraft missions provide scientists a closer look at these important building blocks of our solar system.
The Planets
Elsewhere In the Universe
Latest Features

Read about the most recent findings in our solar system.

The Latest Images of Our Solar System and Beyond