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Astronomical unit: Quick Facts

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Distant space ‘hamburger’ hides a baby gas giant • Oct. 21, 2026, 12:04 PM ET (Popular Science)

Facts

Also Known As au • AU

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Key People

Edmond Halley
Edmond Halley
British scientist
Sir Harold Spencer Jones.
Sir Harold Spencer Jones
British astronomer
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Joseph-Nicolas Delisle
French astronomer

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