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View Full Version : Closest-Ever Look At Betelgeuse Reveals its Fiery Secret



Fraser
2009-Jul-29, 08:30 AM
The giant star Betelgeuse churns out gas bubbles that match its own size — and that's how it can shed an entire solar mass in 10,000 years.That according to the sharpest-ever images of Orion's second-brightest star, released this week by the European Organisation*for Astronomical*Research in the*Southern Hemisphere (ESO). At left is an artistís impression of [...]

More... (http://www.universetoday.com/2009/07/29/close-look-at-betelgeuse-reveals-its-fiery-secret/)

matthewota
2009-Jul-29, 03:03 PM
Betelgeuse must have a very tenuous photosphere, judging by the appearance of the image.

tdvance
2009-Jul-29, 11:16 PM
Betelgeuse must have a very tenuous photosphere, judging by the appearance of the image.

It does--Niven referred to the outer layers of a fictional red supergiant in The Mote in God's Eye as a "hot vacuum". He had ships stationed what one would consider "inside the star" by the photosphere definition--and still in orbit about the star! And Niven does know "something" about math and physics!