1955
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Events
- April 18 - Scientist Albert Einstein dies.
- Astronomer Colin Gum discovers a nebula, which has formed from a supernova remnant.
- Emmett Leith's work on synthetic-aperture radar leads to the development of holography.
Alternate Timeline
- The Terran Empire of the mirror universe existed by this year, as a political party or otherwise, which eventually turned into an interstellar empire.
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