How eclipses proved that the Earth is slowing down

Опубликовано 22 сентября 2023, 17:00

This video is supported by the NASA Heliophysics Education Activation Team (NASA HEAT), part of NASA’s Science Activation portfolio.

Without eclipses, our world would be a lot different because eclipses give us the ability to do science we otherwise wouldn’t be able to.

LEARN MORE
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To learn more about this topic, start your googling with these keywords:
- Corona: the outermost part of the Sun's atmosphere.
- General Relativity: a theory of gravitation developed by Albert Einstein that says that the observed gravitational effect between masses results from their warping of spacetime.
- Lunar Eclipse: an eclipse in which the moon appears darkened as it passes into the earth's shadow.
- Solar Eclipse : an eclipse in which the sun is obscured by the moon.
- Tidal Friction: strain produced in a celestial body (such as the Earth or Moon) that undergoes cyclic variations in gravitational attraction as it orbits, or is orbited by, a second body.

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CREDITS
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Cameron Duke | Script Writer, Narrator and Director
Sarah Berman | Illustration, Video Editing and Animation
Nathaniel Schroeder | Music

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OTHER CREDITS
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Photo of 1919 Total Solar Eclipse
Credit: ESO/Landessternwarte Heidelberg-Königstuhl/F. W. Dyson, A. S. Eddington, & C. Davidson
eso.org/public/images/potw1926...

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REFERENCES
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Espenak, Fred. “NASA - Eclipses and the Saros.” eclipse.gsfc.nasa.gov/SEsaros/SEsaros.html

Guglielmi, Giorgia. “Three Times Scientists Learned Something from Solar Eclipses—and Three Times They Were Tricked.” www.science.org/content/article/three-times-scientists-learned-something-solar-eclipses-and-three-times-they-were

Interrante, Abbey. “NASA Selects 5 Experiments to Study 2024 Total Solar Eclipse.” NASA, 20 June 2023, www.nasa.gov/feature/goddard/2023/sun/science-in-the-shadows-nasa-selects-5-experiments-for-2024-total-solar-eclipse

Littmann, Mark, and Fred Espenak. Totality : The Great American Eclipses of 2017 and 2024. Oxford, United Kingdom, Oxford University Press, 2017

Perkins, Sid. “Ancient Eclipses Show Earth’s Rotation Is Slowing.” www.science.org/content/article/ancient-eclipses-show-earth-s-rotation-slowing

Redd, Nola Taylor. “Here’s What Scientists Have Learned from Total Solar Eclipses.” www.space.com/36785-solar-eclipse-science-throughout-history.html

Steel, Duncan. Eclipse : The Celestial Phenomenon That Changed the Course of History. London, Headline Book Pub, 1999.

Stephenson, F. R., et al. “Measurement of the Earth’s Rotation: 720 BC to AD 2015.” Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 472, no. 2196, Dec. 2016, p. 20160404, doi.org/10.1098/rspa.2016.0404