The Hubble Space Telescope is assembled by technicians in an undated photograph from the 1980s.
Science & Society Picture Library/Getty Images
A man polishes the mirror of the Hubble Telescope, 1980s.
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An image taken by the Hubble telescope entitled Pillars of Creation depicts gaseous pillars in M16, the Eagle Nebula, April 1, 1995.
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This image made by the NASA/ESA Hubble Space Telescope shows Barnard 33, the Horsehead Nebula, in the constellation of Orion (The Hunter). This image shows the region in infrared light, which has longer wavelengths than visible light and can pierce through the dusty material that usually obscures the nebula's inner regions in visible light.
NASA/ESA/ Hubble Heritage Team via AP Photo
This image made by the NASA/ESA Hubble Space Telescope shows Messier 57, the Ring Nebula.
NASA/ESA/Vanderbilt University via AP Photo
This false-color composite image from the Hubble Space Telescope shows the Cartwheel galaxy.
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This mosaic image of the Crab Nebula, one of the largest ever taken by NASA's Hubble Space Telescope, shows the six-light-year-wide expanding remnant of a star's supernova explosion as released December 2, 2005.
NASA released a new photo of the "Pillars of Creation" from the Hubble Telescope, Jan. 6, 2015.
Massive galaxy cluster Abell 2744, nicknamed Pandora's Cluster, takes on a ghostly look where total starlight has been artificially colored blue in this Hubble view.
NASA released an image taken by the Hubble space telescope of a cluster of stars known as NGC-121, in one of our neighboring galaxies.
The Hubble telescope captured an asteroid disintegrating, Jan. 14, 2014.
The Hubble Space Telescope captured this image of the "butterfly wing" shaped nebula, NGC 2346. The nebula is about 2,000 light-years away from Earth in the direction of the constellation Monoceros.
The NASA/ESA Hubble Space Telescope captured the global cluster Messier 56 within the constellation of Lyra, located about 33,000 light years away from the Earth.
The galaxy NGC 1277 as seen by the Hubble Space Telescope. Researchers now report that at its center is one of the most massive black holes ever found.
Andrew C. Fabian/ESA/NASA
This January 2005 image made by the NASA/ESA Hubble Space Telescope shows the Whirlpool Galaxy (M51) and a companion galaxy. The Whirlpool's two curving arms are star-formation factories, compressing hydrogen gas and creating clusters of new stars.
NASA/ESA/Hubble Heritage Team STS via AP Photo
This undated photo provided by NASA shows an image taken by the Hubble Space Telescope showing a breeding ground for stars in the Constellation Carina, about 20,000 light years from Earth.
NASA/ESA/Hubble Heritage Team via AP