Black and white photograph of the 1919 solar eclipse taken by Arthur Eddington on one of the expeditions. The disc of the moon completely obscures the sun so that only the corona is visible, flaring out in all directions.

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Robert McNees (mcnees@mastodon.social)'s status on Monday, 06-Nov-2023 18:04:13 UTC Robert McNees

Deflection of starlight by the Sun’s gravitational field, measured during a solar eclipse and confirming a central prediction of Einstein's general relativity, was announced at a joint meeting of the Royal Society and the Royal Astronomical Society #OTD in 1919.

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