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Thread: Betelgeuse

  1. #1
    Join Date
    Oct 2020
    Posts
    1

    Betelgeuse

    Your heading says Betelgeuse is 25 % closer than previously thought. Using your numbers 650 and 530 light years , that percent should be closer by 18.46 %

  2. #2
    Join Date
    Jul 2005
    Posts
    19,762
    You're referring to this Universe Today article?
    I think the number comes from these two sentences:
    "A recent 2017 study came up with 724 light-years (+111/-156)"
    "They used three separate models to interpret that data, and they arrived at a distance measurement of 548 (+88/-49) light-years away".

    Given the confidence ranges for both measurements, that's indistinguishable from "25% closer".

    Grant Hutchison

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