Science on the 13th of December 1920 in history

Date	Type	Text
13 Dec 1920 Betelgeuse	science	Betelgeuse (astronomy) The red giant star Betelgeuse is the first to have its diameter determined by an optical astronomical interferometer, the Michelson stellar interferometer on Mount Wilson Observatory's reflector telescope.	0

Date

Type

Text

13 Dec 1920

Betelgeuse

science

Betelgeuse (astronomy)
The red giant star Betelgeuse is the first to have its diameter determined by an optical astronomical interferometer, the Michelson stellar interferometer on Mount Wilson Observatory's reflector telescope.

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Science on the 13th of December 1920 in history

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