Beta
×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Comments

top

The Sun Had Sisters

Birger Johansson Re:Huh? (155 comments)

-The shock wave from the supernova (which is rich
in heavy elements) will sweep up interstellar gas
until the total supernova remnant will be a shell
of hundreds -or even thousands- of solar masses
of gas, sometimes with a neutron star or a black
hole in the center remaining of the star.

If one part of the supernova remnant has swept up
enough gas, the compressed gas can begin to contract
under its own gravity
to create the next generation of stars.

Typically, when a big nebula begins to collapse,
the heaviest fragments contract first, creating
short-lived giant stars that explode and seed the
rest of nearby space with heavy elements.
The shock waves then fragment and contract into new
proto-stars, with sizes distributed from many very
small red dwarf stars to a few bigger stars.

Yours Birger Johansson, Sweden

more than 7 years ago

Submissions

Journals

Birger Johansson has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>