The Most Influential Discoveries in Astronomy: Henrietta Leavitt's Impact

Henrietta Swan Leavitt was employed as a computer - to analyse stellar images for the astronomer she worked for for.
But she made a crucial discovery that vastly improved our ability to measure astronomical distances and led the complete transformation of our understanding of the cosmos.
Credit
Glass plate (Credit: Harvard College Observatory, Photographic Glass Plate Collection)
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[@sudhakarreddy1453]

That is an awesome narration Sir 🎉🎉🎉

[@nirbhay_raghav]

Wonderful video. She became a star afterall❤

[@PigzHeadNz]

Thanks for the knowledge. 👍❤️👩‍🚀

[@ilapatel3077]

Good and informative segment. Thank you.

[@markoszouganelis5755]

Thank you!

[@Life_42]

Thank you for sharing!

[@alexthompson6613]

Great explanation, and beautifully delivered. Thanks Paul!

[@capnkwick4286]

One thing that you didn't bring up - while astronomers could say star A is apparently as bright as cephid variable star X, until someone worked out the distance to a cephid, the cephid stars could not be used as a standard candle. Unfortunately, I can't remember who measured the distance to nearby cephid stars (using parallax), but once that was accomplished, then astronomers could use cephids as standard candles.

[@alexthompson6613]

This is addressed in the video from 4:34

[@lazyidealist]

Thank you for such an insightful and beautiful video