Britain's Partial Eclipse: Wonder in a Divided World
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- Britain saw a partial solar eclipse on Wednesday, with crowds noting the sun's power waning, twilight changing tone abruptly, and temperatures falling; the country must wait 55 years for another comparably deep partial eclipse and 64 years for totality.
- The path of totality swept Greenland, Iceland, and Spain, where the moon completely obscured the sun, leaving only a black disc surrounded by a fiery corona in a purplish firmament.
- Anaxagoras, a Greek philosopher, is credited with first proposing the correct theory of eclipses after witnessing one in 478 BC.
- The 1868 solar eclipse over colonial India led to the joint discovery of the element helium by French astronomer Pierre Janssen and Britain's Norman Lockyer.
- The 1919 eclipse expeditions to Príncipe (off west Africa) and Brazil, organized by a joint committee of the Royal Society and Royal Astronomical Society with government funding and privileged access to the navy and colonial administrations, confirmed Einstein's general theory of relativity by observing starlight bent by the sun's gravity.
Why it matters: Beyond spectacle, eclipses have functioned as physics laboratories: the 1919 Príncipe and Brazil expeditions, backed by British colonial and naval infrastructure, confirmed Einstein's general relativity by observing starlight bending around the sun. The editorial argues this shared cosmic wonder still cuts across today's national divisions, noting it once made a German-born physicist the world's most famous scientist months after the war with Germany.
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