Mercury is the closest planet to the Sun, and the second-smallest planet in the solar system!
It is about the same size as our Moon and their cratered surfaces actually have much in common.
Venus was long thought of as the Earths twin. Many believed that it contained a lush, earth-like environment. In reality its harsh conditions restrict our understanding of the nearest neighbor.
After you download this screensaver you wont ever have to buy a worldwide travel! Its on your screen! Realistic 3D Earth model will rotate on your desktop.
In the last ten years astronomers have discovered over 130 planets beyond our own solar system. But sadly, with today`s technology there are no direct images of these distant worlds.
