This is the last of three blog posts associated with this week’s episode of Cosmos: A Spacetime Odyssey, which addresses life in the universe. Read the first and second here. Someday, in the not too ...
On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...
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Mira variable stars used to measure cosmic expansion rate
Mira variable stars change in luminosity in a regular pattern. Scientists have used 40 Mira variable stars to anchor an ...
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