<pedrocorreia.net ⁄>
 

<Why Won't the Supernova Explode? ⁄ >




clicks: 613 613 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: 506 506 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: 786 786 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: 747 747 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: 1509 1509 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: 919 919 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: 958 958 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: 960 960 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

This page presents a variety of calculations for latitude/longitude points, with the formulæ and cod (...)

clicks: 1396 1396 2010-08-12 2010-08-12 goto url (new window) movable-type.co... goto myNews ciencia