Earth
The Earth is quite a nice spot. It has a thick atmosphere with
oxygen for us to breath. There is lots of water too. The temperature
is just right.
![](../ImEarth/earthmo2.gif)
The view from space, with the Moon in the background.
Here is a topo map of the Western Hemisphere.
![](../ImEarth/america.gif)
Why the big high areas and big low areas?
There are a few impact craters on Earth.
Why not more?
Davison E. Soper, Institute of Theoretical Science,
University of Oregon, Eugene OR 97403 USA
soper@bovine.uoregon.edu