<pedrocorreia.net ⁄>
 

<Why Won't the Supernova Explode? ⁄ >




clicks: 3634 3634 2010-01-08 2010-01-08 goto ciencia myNews ciencia  Bookmark This Bookmark This


A massive old star is about to die a spectacular death. As its nuclear fuel runs out, it begins to collapse under its own tremendous weight. The crushing pressure inside the star skyrockets, triggering new nuclear reactions, setting the stage for a terrifying blast. And then... nothing happens.

At least that's what supercomputers have been telling astrophysicists for decades. Many of the best computer models of supernova explosions fail to produce an explosion. Instead, according to the simulations, gravity wins the day and the star simply collapses.

Clearly, physicists are missing something.



este é só um excerto do artigo, para aceder ao artigo completo, clique no link em baixo:
this is just a small excerpt from the article, to access the full article please click in the link below:

http://science.nasa.gov/headlines/y2010/07jan_nustar.htm




Subscribe News RSS  Subscribe News Updates by E-mail





myNews <myNews show="rand" cat="ciencia" ⁄>

NASA Unveils Their New Launch System

NASA Adminstrator Charlie Bolden and several members of Congress announced today the decision on NAS (...)

clicks: 6803 6803 2011-09-21 2011-09-21 goto url (new window) universetoday.c... goto myNews ciencia


Breakthrough Study Confirms Cause of Short Gamma-Ray Bursts

A new supercomputer simulation shows the collision of two neutron stars can naturally produce the ma (...)

clicks: 6850 6850 2011-04-18 2011-04-18 goto url (new window) nasa.gov/topics... goto myNews ciencia


NASA's Kepler Mission Helps Reveal the Inner Secrets of Giant Stars for the First Time

University of Sydney astrophysicists are behind a major breakthrough in the study of the senior citi (...)

clicks: 6843 6843 2011-04-09 2011-04-09 goto url (new window) nasa.gov/missio... goto myNews ciencia


Best Images from 2010

Here are some of the best space and astronomy images from 2010. These are in no particular order or (...)

clicks: 8565 8565 2011-01-01 2011-01-01 goto url (new window) universetoday.c... goto myNews ciencia


Voyager 1 Has Outdistanced the Solar Wind

The venerable Voyager spacecraft are truly going where no one has gone before. Voyager 1 has now rea (...)

clicks: 7225 7225 2010-12-25 2010-12-25 goto url (new window) universetoday.c... goto myNews ciencia


Food expiration dates: What do they really mean?

Are you one of those people who pour the milk down the drain on the expiration date? Expiration d (...)

clicks: 7137 7137 2010-09-16 2010-09-16 goto url (new window) green.yahoo.com... goto myNews ciencia


NASA - A Galactic Spectacle

A beautiful new image of two colliding galaxies has been released by NASA's Great Observatories. The (...)

clicks: 7017 7017 2010-08-21 2010-08-21 goto url (new window) nasa.gov/missio... goto myNews ciencia


Calculate distance, bearing and more between Latitude/Longitude points

(...)

clicks: 8363 8363 2010-08-12 2010-08-12 goto url (new window) movable-type.co... goto myNews ciencia