That's what Hubble can do for us. It can tell us whether the universe is expanding forever or if one day it's going to come back together.
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About Duane G. Carey
Duane G. Carey was a contemporary American astronaut and usaf lieutenant colonel. Duane Gene "Digger" Carey is a retired lieutenant colonel in the United States Air Force and a former NASA astronaut. He piloted the space shuttle Columbia on March 1, 2002, during a Hubble Space Telescope servicing mission. Read more on Wikipedia →