Free Republic
Browse · Search
General/Chat
Topics · Post Article

To: Telepathic Intruder
>Betelgeuse isn’t the right type of star to produce a GRB

Good, one layer of protection via theory. Do we know, as a second layer, the orientation of its poles well enough to say it wouldn’t ‘be pointed at us if the first theory were wrong? That much angular momentum is very unlikely to change its aim.

70 posted on 02/11/2020 6:01:17 AM PST by JohnBovenmyer (waiting fo the tweets to hatch)
[ Post Reply | Private Reply | To 48 | View Replies ]


To: JohnBovenmyer

Well, they have been able to get details of Betelgeuse’s surface using speckle interferometry, and one of the brighter spots is thought to be its pole. This is off center, so not pointed at us. But I doubt Betelgeuse is about to supernova anyway. I’ve heard another theory that it may have absorbed another star as it expanded into a supergiant, and still has plenty of fuel for another few million years. But you can never really be sure.


72 posted on 02/11/2020 6:14:51 AM PST by Telepathic Intruder
[ Post Reply | Private Reply | To 70 | View Replies ]

Free Republic
Browse · Search
General/Chat
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson