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Fermi Spots the Biggest, Baddest Gamma Ray Blast Ever Seen

02/22/2009 08:17AM

Fermi Spots the Biggest, Baddest Gamma Ray Blast Ever Seen

The first Gamma Ray Burst to be seen in high-resolution from NASA's Fermi Gamma Ray Space Telescope is one for the record books. The blast had the greatest total energy, the fastest motions, and the highest energy initial emissions ever seen. This GRB exceeded the power of approximately 9,000 ordinary supernovae.


Comments:

  • TWLAY [Terry Lay]
  • 02/22/2009 03:11PM
That is one impressive picture. So how long ago must that have happened???
Terry:<br><br>Here is the NASA Press Release in 2004 when this image of Supernova remnant W49B was taken.<br><br>http://www.nasa.gov/centers/marshall/news/news/releases/2004/04-158.html<br><br>It doesn't specifically give an age for when W49B went Supernova, but through other scientific sources, the age ( that is, in the current state as we see it from Earth) has been estimated to be greater than 2000 years and less than 5000 years. Add that to 35000 (since W49B is 35000 light years from Earth) and we can estimate that this event occurred 37000 to 40000 years ago.<br><br>However, if any of our ancestors did indeed see this event, it would have been 2000 and 5000 years ago.<br><br>Hope this helps,<br><br>Guy Pirro<br><br><br><blockquote class="blockquote"><div class="italic"><i>terry lay said:</i><br><br>That is one impressive picture. So how long ago must that have happened???</div></blockquote><br>