and millicent bell, through the millicent and eugene bell foundation. since the dawn of humanity, we've looked to the heavens and wondered, how old is the universe? how many stars are there in the sky? are there other planets out there like our own? but in the last 25 years, there's been a revolution... all because of a machine called hubble. traveling in space, high above the distortions of our atmosphere, gives this giant telescope great power. matt mountain: it's the size of a school bus. it's traveling at 17,000 miles an hour. it's 300-and-something miles above your head. but in there is one of the most precise mirrors mankind has ever built. narrator: billions of times more sensitive than our own eyes, the space telescope has literally brought the universe to us, making more than a million observations. one legendary image is called the "pillars of creation." it's a giant plume of gas and dust where stars are born. our own sun probably formed in a place like this. amber straughn: the whole region is something like 400 trillion miles, so it's massiv

foundation. and by the frontline journalism fund, with major support from jon and jo ann hagler and additional support from millicent bell, through the millicent and eugene bell foundation. >> in tucson it was a beautiful, crisp, clear blue sky with a few puffy white clouds. it was a perfect january morning. >> narrator: 40-year old arizona congresswoman gabby giffords was about to meet constituents at an outdoor shopping center. >> i went to thank her for her being kind of a blue-dog democrat and really working for the people and not for the lobbyists. >> her first person she met with was a young man that was in the army reserve. she took some pictures with him. and that was the last picture taken of her before she was... before she was shot. he shot gabby from about three feet away, right in the middle of the left side of her forehead. he had a 9 millimeter glock in his hand and a 33-round magazine in it. >> there was a bang and then a slight pause and then a continuous bang, bang, bang, bang, bang. (succession of gunshots) >> emptied the magazine in 15 seconds. there were 33 wounds from 33 bullets, so it looks like every bullet hit a person. >> 9-1-1,