Christopher Crockett: The Astronomy Word of the Week Is "Barycenter"

Curated by ACT

While astronomers and philosophers have long mused on the possibility of other solar systems, the first planets confirmed to orbit a star other than our Sun weren't found until 1992. The reason it took so long is that it's really hard! When viewed from a distance of 10 light-years, the separation between the Sun and Jupiter is roughly equal to the thickness of a quarter viewed from 2 km away.

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