The Dead Sun

  • Thread starter Helios
  • Start date
  • #1
256
47
When the Sun burns out entirely and reaches the ambient temperature of outer space, what will be its radius, mass, and composition? What would we call such a thing?
 

Answers and Replies

  • #2
chroot
Staff Emeritus
Science Advisor
Gold Member
10,226
34
The Sun will blow off its outer layers and will exist as nothing more than an exposed, dead core. This is known as a white dwarf. It'll be mostly carbon and oxygen, and will have a radius of only about 1/100th of the Sun in its present state. It will continue to shine for a very long time, since it'll be hot and have a small surface area. Eventually, it'll cool to the point where it will no longer emit any visible radiation. It will become a "black dwarf."

http://en.wikipedia.org/wiki/White_dwarf

- Warren
 
  • #3
748
41
I've cut and paste the following I posted in a previous thread regarding the future of our sun- https://www.physicsforums.com/showthread.php?p=1267025#post1267025

'Below is a link to a web page created by Helmut Schattl of the Max Planck Institute regarding the future of our sun-

http://home.arcor.de/helmut.schlattl/astro/animation/english/anim_index.html

There's a 7 minute video which is informative (this is a bit tricky to d/l. Right click on "The Future of Our Sun" and 'save target as'. In the 'file name' box, replace the second suffix .avi with .bz2 so the file name reads sun.avi.bz2, then in the 'save as type' box, change to 'all files', then save the file to your computer. Once saved, the zipped file can be opened with bzip2 or winRAR software. Alternatively, the video is posted on YouTube under the same title).'

regards
Steve
 

Related Threads on The Dead Sun

  • Last Post
Replies
3
Views
11K
  • Last Post
Replies
12
Views
3K
  • Last Post
Replies
7
Views
3K
Replies
31
Views
4K
Replies
4
Views
1K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
6
Views
14K
  • Last Post
Replies
22
Views
7K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
3
Views
2K
Top