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Beetlejuice Star Supernova 2024. If betelgeuse explodes, just how bright will it get? Today, astronomers know that betelgeuse varies in brightness because it’s a dying, red supergiant star with a diameter some 700 times larger than our sun.

Analyzing data from nasa’s hubble space telescope and several other observatories, astronomers have concluded that the bright red supergiant star. Catherine o’hara as delia deetz.