You can use this page to catch up on what is going on with our exploration of asteroids.
Asteroids are the rocky leftover debris from the formation of our solar system.
The exploration of these worlds has only just begun and the veil of mystery is beginning to lift from these tiny worlds. The Galileo mission to Jupiter gave us our first close look at an asteroid. Galileo passed by asteroid 951 Gaspra in October of 1991. Gaspra, at left, is thought to be a mix of rock and metal. Like virtually all asteroids, it has an irregular, potato-like shape.