Hubble Space Telescope Turns 25

It's up there right now -- flying about 340 miles over the Earth and circling us every 97 minutes. It's a telescope -- in the sky. Just think about that for a bit.
It's called the Hubble Space Telescope. The telescope itself is not really much to look at. If you could see it right now you might think it's just a big shiny, silver bucket with two gangly solar arms and a couple of dish antennae. It's about the size of a school bus and weighs about as much as two elephants.