On this day: April 25

Published On: Apr 23 2013 05:10:32 PM CDT   Updated On: Apr 25 2014 01:00:00 AM CDT

The guillotine is first used, American and Soviet troops cut Nazi Germany in two, a U.S. Navy submarine completes the first submerged circumnavigation of the globe, and the Hubble Space Telescope is launched, all on this day.

OTD April 25 - Hubble Space Telescope
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NASA/IMAX

1990: The Hubble Space Telescope is launched from the space shuttle Discovery. Scientists later discovered that the telescope's main mirror had been ground incorrectly, compromising the telescope's capabilities. It would be restored to its intended quality by a servicing mission by the space shuttle Endeavour in 1993.

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