Besides providing a fascinating glimpse into what our universe looks like beyond our solar system, Hubble’s photographs aid researchers in calculations.
For example, Hubble was able to pinpoint galaxy M81, which was used to measure its distance from our galaxy. Because the universe is ever expanding, this key measurement helped scientists estimate the age of the universe to 13.8 billion years.
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The Hubble Telescope will celebrate its birthday April 24, marking 30 years since its initial launch.
According to the NASA search tool, the Hubble Telescope was snapping photos of the Cygnus Loop Supernova Remnant on its first birthday in 1991. The rainbow light bands in the picture are the aftermath of a massive star explosion 15,000 years ago.
»PHOTOS: The Hubble Telescope's Greatest Hits