Sizes of Stars and Sub-Stellar Objects From Brown Dwarf to Red Hypergiant

The video explores the sizes of stars, starting with the sun and comparing it to other stars. It discusses the smallest stars, red dwarfs, and substellar objects like brown dwarfs, which do not sustain nuclear fusion. The video then examines the upper mass limits of stars, proposing a theoretical limit of 150 solar masses, and highlights some of the largest known stars, such as Canis Majoris and UY Scuti.

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