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COSMIC DISTANCES: HOW WE KNOW HOW FAR THINGS ARE IN SPACE
2 years ago
12
In this video, we explore one of the most intriguing questions in astronomy - how do we measure the distance of stars and galaxies? We discuss three methods that astronomers use to measure distance - parallax, Cepheid variables, and redshift - as well as a special type of star known as a "standard candle." We explain how each method works and the strengths and weaknesses of each. By the end of the video, you'll have a better understanding of how astronomers calculate the vast distances of objects in the universe. Join us as we delve into the fascinating world of space and astronomy!
https://www.esa.int/Science_Exploration/Space_Science/Gaia/Parallax
https://it.wikipedia.org/wiki/Cefeide#/media/File:Period-Luminosity_Relation_for_Cepheids.png
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