Peter van Hoof, astronomer at the Royal Observatory of Belgium | By Hubble Space Telescope | Facebook
The New Horsemen - Edwin Hubble- Astronomer Honorary Horseman Edwin Hubble was an American astronomer who played a crucial role in establishing the field of extragalactic astronomy and is generally regarded as
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Discrepancies in the Hubble Constant Have Vexed Astronomers – NASA's Roman Space Telescope Could Help Resolve the Puzzle
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