Ron Cowen is a freelance astronomy and physics reporter based in Silver Spring, Maryland. He’s the author of Gravity’s Century: From Einstein’s Eclipse to Images of Black Holes (2019, Harvard Press)
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8:06
The Eclipse That Made Einstein A Worldwide Celebrity
100 years ago, scientists shared their observations of how the sun’s mass bent starlight—an announcement that made Einstein an overnight celebrity.
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The Eclipse That Proved Einstein’s Theory Correct
In 1919, a team of astronomers presented their findings about warped starlight to the Royal Astronomical Society in London, proving Einstein’s theories.
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17:01
Colossal Quasar Clump Too Huge to Exist, in Theory
Astronomers have discovered a clump of 73 quasars spanning four billion light years at its widest point — that’s like 40,000 Milky Way galaxies lined end-to-end.