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Science history: Edwin Hubble uncovers the vastness of the universe with discovery of 'standard candle' — Oct. 5, 1923

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

How a hatter and railroad clerk kickstarted cancer research

A hatter and a railway clerk’s 1925 medical breakthrough became one of the most profound events in medical history. Image: ...