The Universe as Seen by Hubble Ten years ago, the way we see the universe changed. A December, 1993, repair mission by U.S. space shuttle astronauts gave badly-needed "eyeglasses" to the Hubble Space Telescope. Since then, the instrument has taken thousands of breathtaking images that have been beamed back to Earth.

The Universe as Seen by Hubble

Space Telescope's Legacy: A Dynamic, Explosive Cosmos

The Universe as Seen by Hubble

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Scientist Mario Livio describes the Eagle Nebula.

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Livio tells how the Hubble images are created.

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Newborn stars emerging from dense, compact pockets of interstellar gas in the Eagle Nebula, 7,000 light-years from Earth in the constellation Serpens. Jeff Hester, Paul Scowen, NASA hide caption

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Jeff Hester, Paul Scowen, NASA

The Hubble Space Telescope in orbit. NASA hide caption

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Ten years ago the way we see the universe changed. A December 1993 repair mission by shuttle astronauts, in short, put "eyeglasses" on the Hubble Space Telescope.

Scientists operating the telescope had discovered that its mirror had a flaw -- a "spherical aberration." The mirror was perfectly polished, but to the wrong specifications. As a result, the pictures that came back were blurry -- a far cry from the exquisite images of distant galaxies that scientists had been dreaming about for years.

Once repaired, Hubble quickly began sending back the breathtaking images now seen in books, posters and even on a record cover by Pearl Jam.

Hubble has revealed a universe that is dynamic, explosive and ever expanding. Now, as its mission winds down, planning for the Hubble's eventual demise has begun. NPR's Michele Norris, host of All Things Considered, talks with Mario Livio, a senior scientist at the Space Telescope Science Institute, about Hubble's discoveries.