Jump to content
Sign in to follow this  
Admin

[Slashdot] - The Galaxy's Brightest Explosions Go Nuclear With an Unexpected Trigger

Recommended Posts

sciencehabit writes: Type Ia supernovae, a bright and long-lasting brand of stellar explosion, play a vital role in cosmic chemical manufacturing, forging in their fireballs most of the iron and other metals that pervade the universe. The explosions also serve as "standard candles," assumed to shine with a predictable brightness. Their brightness as seen from Earth provides a cosmic yardstick, used among other things to discover "dark energy," the unknown force that is accelerating the expansion of the universe. Astronomers have long thought that the blasts come from white dwarfs, burnt out stars once like our Sun, reignited after stealing material from a companion red giant. But evidence is mounting that other mechanisms may be causing white dwarfs to explode, making their standard candle status a puzzle.

twitter_icon_large.png facebook_icon_large.png

Read more of this story at Slashdot.

NMA2Wv47VKQ

View the full article

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

By using The Great Escaped Online Community, you agree to our Privacy Policy and Terms of Use