Hubblecast HD

The latest news about astronomy, space, and the NASA/ESA Hubble Space Telescope presented in High Definition.

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Hubblecast 116: Henrietta Leavitt — ahead of her time


Born in 1868, Henrietta Leavitt was an astronomer ahead of her time, whose work helped to revolutionise our understanding of the Universe. While working at Harvard Observatory, she began to study stars of fluctuating brightness. She made a crucial observation about these objects, which gave astronomers a new way to measure distances, ultimately leading to such impactful discoveries as the expansion of the Universe.


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 2019-02-20  4m