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Stories by Matthew Francis

What We Know About Black Holes

The Game Is Afoot Left: Chandra X-ray Telescope image of Cygnus X-1, the first black hole candidate discovered. Link. In 1972, a bright X-ray source was discovered by the Uhuru satellite in the constellation Cygnus at the same location as a bright blue-white star with the highly memorable name HD226868...

September 2, 2011 — Matthew Francis
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The Essential Guide to the Modern World

The Essential Guide to the Modern World