Henrietta Swan Leavitt — Person Summaries
AI-powered summaries of 3 videos about Henrietta Swan Leavitt.
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The NEW Crisis in Cosmology
Cosmology’s “Hubble tension” has sharpened rather than softened: two high-precision ways of measuring the universe’s expansion rate still disagree,...
Terence Tao continuing history’s cleverest cosmological measurements
Distance in astronomy isn’t measured directly so much as assembled—step by step—into a “cosmic distance ladder.” The central insight is that once one...
How Do We Know What Stars Are Made Of?
Stars are made mostly of hydrogen and helium—and scientists figured that out by reading the “missing” colors in starlight, not the light itself. When...