Astronomy is a study of outer space.

It's important science, but for many people an enjoyable hobby. So people tend to flock to an astronomy picture of the day. There are so many things to see, that browsing such images will never become boring.

NASA of course is a primary source for an astronomy picture of the day. There's a new image there every day. There's also another section that shows videos and images. This could be used to create your own image site. Saturn's moon Enceladus was featured on November 5, 2008. It was taken by the Cassini space craft as it passed about 1,700 kilometers from the surface. The image is so detailed that features about the size of a bus are viewable. One interesting feature of the ice on Enceladus is that it reflects 99% of the light that falls onto it. Talk about snow blind. The plan is that Cassini will take more images of this moon later in its mission.

NASA's images of the day go all the way back to June 16, 1995. It was a what if image of the Earth posing as a neutron star. This photo was created by the computer. It shows Orion visible twice. That's because a neutron star is dense enough to bend light from behind it to the front of it. This causes some double vision.

September 8, 1995 brought a very interesting image of the central part of our own Milky Way galaxy from the NASA COBE Satellite. This image would normally not be visible because the dust in the galaxy obscures it in the visible spectrum. But COBE's infrared imaging captured this amazing image.

The astronomy picture of the day was the same on January 1, 2000 and January 1, 2001. That's because most people believe the year 2000 was the first year of the new millennium. But in reality the new millennium started on January 1, 2001. NASA decided to just go with both. http://apod.nasa.gov/apod/ap010101.html shows man's view of the universe as it progressed from orbs that orbit around the Earth all the way to the Big Bang creating the universe as we know it.

It would be very hard to see each and every astronomy picture of the day. Go to NASA's website for more.