http://apod.nasa.gov/apod/
The Antennae
This picture looks beautiful it looks like a cloud in the sky. But this is actually about 60 million light-yrs from Earth. And in this cloud there is really two large galaxies collided!!! These galaxies are NGC 4038 and NGC 4039. The act of the galaxies colliding goes from billions of years or even longer, no one knows because it no one has been around to observe that long. While this looks just like a cloud it is really about 500 thousand light-years long, a little longer than a cloud. This is an example of how things may look different than they really are in space.
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