Wednesday, June 10, 2009

It's called shrinkage...

as the bright, red supergiant star Betelgeuse, in the constellation Orion, contracts by 15% in size since 1993:
"That means the star's radius has contracted by a distance equal to the orbit of Venus. Though the star is shrinking, its visible brightness has not dimmed significantly over the past 15 years, the researchers say."

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