VO-BB - 20 YEARS OLD!

ccpetersen · Posted: Tue Dec 24, 2013 12:10 pm Post subject: Stargazing for the Holidays

Holiday Greetings to all my VO-BB friends.

http://thespacewriter.com/wp/2013/12/24/holiday-stargazing/
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Bailey · Posted: Tue Dec 24, 2013 1:11 pm Post subject:

CC... does everyone know just how large Betelgeuse is?... compared to our Sun?
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Lee Gordon · Posted: Tue Dec 24, 2013 2:56 pm Post subject:

Betelgeuse is 15 Billion times larger than the sun.
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Joe Trela · Joined: 23 Dec 2013 Posts: 1 Location: Antioch, CA

Achernar, Canopus...oh how they TAUNT me, just below the horizon!
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ccpetersen · Posted: Thu Dec 26, 2013 1:03 pm Post subject:

Actually, nobody really knows exactly what its mass is compared to the Sun. The usual range in the past was between 7 and 30 solar masses. It would be easy to figure out if Betelgeuse had a companion star or a planet; then we could calculate the mass more accurately. It's a supergiant star, and it's also a variable star (which makes it more tricky to derive its mass).

I've seen recent estimates of its mass to be around 11 or 12 solar masses.
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