life: Today we look at a photograph of Edwin Hubble made in 1937 — arguably the single greatest photo ever made of a scientist at work. (Margaret Bourke-White

life: Today we look at a photograph of Edwin Hubble made in 1937 — arguably the

life: Today we look at a photograph of Edwin Hubble made in 1937 — arguably the single greatest photo ever made of a scientist at work. (Margaret Bourke-White—Time & Life Pictures/Getty Images)

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