New Information on Betelgeuse

Betelgeuse, shown here as the top left star in the shoulder of Orion

Some interesting new information has emerged on Betelgeuse, the red supergiant that marks the left ‘armpit’ of Orion the Hunter.

In summary:

1. It’s still burning Helium in its core so unlikely to go supernova until around 100,000 years.

2. It’s not as massive as previously thought. Earlier studies had shown its radius would extend to the orbit ofJupiter if placed in our solar system. This new data suggests its real radius is 60% of this.

3. It’s closer to Earth than previously measured, at 530 light years. This is 25% closer than we previously thought.

New data published in the Astrophysical Journal. Further reading here.

One thought on “New Information on Betelgeuse

  1. Fantastic update Stephen, mòran taing! So happy to have you visit us for Hebridean dark skies in past years. The service you do for our communities is invaluable. Looking forward to an environmental talk on ‘satellite litter’ sometime.

    Like

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