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208 results for the search term: supernova
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12
POPS
The Witch's Broom Nebula
skwirlinator
by skwirlinator  8-19-2008   
 No Remarks
0
POPS
craigslist find...
LoPhatt
by LoPhatt  8-19-2008   
 Some people get lit up and glow like a supernova.
3
POPS
Hubble unveils colorful star birth region on 100,000th orbit milestone
tabsey
by tabsey  8-12-2008    1
 No Remarks
8
POPS
New Exotic Particle May Explain Milky Way Gamma Phenomenon
unbelievers
by unbelievers  7-28-2008   
 So what produces gamma-rays in large numbers? The first thing that comes to mind is a gamma-ray burst, produced when a massive star dies and collapses as a supernova. But this is short-lived and not sustained. How about the supermassive black hole sitting in the middle of the Milky Way’s galactic nucleus? This theory was recently discussed on Astroengine, but the production of antimatter (i.e. positrons) is more of a slow leak than anything substantial, certainly not of the scale that is being measured. As we are dealing with gamma-rays of the exact rest mass energy as a positron, so we know that the source is some kind of positron annihillation. What could possibly be doing this?
14
POPS
Quiet Explosion: Object Intermediate Between Normal Supernovae And Gamma-ray Bursts Found
Silkweaver
by Silkweaver  7-25-2008   
 Stars that were at birth more massive than about 8 times the mass of our Sun end their relatively short life in a cosmic, cataclysmic firework lighting up the Universe. The outcome is the formation of the densest objects that exist, neutron stars and black holes. When exploding, some of the most massive stars emit a short cry of agony, in the form of a burst of very energetic light, X- or gamma-rays.
1
POPS
Roswell rock mystery
zadoz
by zadoz  7-15-2008   
 connection to crop circles
3
POPS
Echoes of a Supernova: Spitzer Space Telescope
pokkets
by pokkets  7-13-2008   
 We can't physically travel back in time (yet?) but the complete history of the universe lays before our eyes. As our technology, and understanding improves, what we can read of that history also improves, continually answering questions that we had not dreamed of just a short time ago.
13
POPS
Cosmic Monster
JohnWaterman
by JohnWaterman  7-13-2008   
 No Remarks
2
POPS
Hubble snaps ghostly ribbon of light
kkcapricorn
by kkcapricorn  7-4-2008   
 I was unable to clip other pictures, but the links are there. Spectacular. Makes one feel oh so insignificant in the grand scheme of things.
1
POPS
Picture Of The Day
aMiNdViRuS
by aMiNdViRuS  7-4-2008   
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3
POPS
The Space Ribbon
skwirlinator
by skwirlinator  7-4-2008   
 No Remarks
12
POPS
Proposed NASA Mission Could Explore Twisted Space Around Black Holes
Silkweaver
by Silkweaver  7-1-2008   
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4
POPS
Hubble Does Independence Day With Stars and Stripe
JohnWaterman
by JohnWaterman  7-1-2008   
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3
POPS
Pickering's Triangle from Kitt Peak
skwirlinator
by skwirlinator  7-1-2008    2
 No Remarks
11
POPS
A Quark Star? Super-luminous Stellar Explosion Observed
Silkweaver
by Silkweaver  6-29-2008   
 Quarks are the fundamental components of protons and neutrons, which make up the nucleus of atoms. The most dense objects known to exist today are neutron stars--stars composed entirely of tightly packed neutrons. A typical neutron star is some 16 miles across, yet has a mass one and a half times the mass of our Sun. The question is, is a neutron star indeed the most dense object that exists? It is thought that if the neutrons are too tightly packed--if what scientists consider a neutron star is too dense--the resulting instability may lead to a further collapse, resulting in a second explosion and the creation of a quark star. The energy that powers that second explosion comes from neutrons breaking down into their component parts: quarks.
2
POPS
Reduce, Reuse, Recycle - On a Stellar Scale
Rustee
by Rustee  6-29-2008    2
  PSR 1257 is too faint to see...It's so tiny that you couldn't even see it from its planets.
4
POPS
Gemini’s galactic twins
JohnWaterman
by JohnWaterman  6-27-2008   
 No Remarks
0
POPS
Strange Ring Found Circling Dead Star
tabsey
by tabsey  6-26-2008   
 Recommend this article to astronomy tragics.
0
POPS
follow up on this - remix of headphones, irish guy
imolgen
by imolgen  6-25-2008   
 No Remarks
2
POPS
Bored With Web 2.0? Demand Change
Socratoad
by Socratoad  6-24-2008    2
 This manifesto for change comes at an important time, when a recent, but growing trend of Web 2.0 ennui is beginning to strike the citizens of the social media landscape. Even VC Fred Wilson was recently caught wondering if he was "bored with Web 2.0," saying: But I am a bit jealous of friends who are working on finding and funding alternative energy or biomedical technologies that have the potential to address the serious problems facing the world. At times it seems that helping the web become more social, intelligent, mobile, and playful is not as impactful.
3
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China Gets Dubious Honor
Socratoad
by Socratoad  6-14-2008   
 No Remarks
9
POPS
Ultraviolet gives view inside real ‘death star’
arifsali
by arifsali  6-13-2008   
 No Remarks
5
POPS
Aussie astronomers find 'baby' supernova
pokkets
by pokkets  6-12-2008   
 No Remarks
1
POPS
GLAST - Gamma-Ray Large Area Space Telescope
skwirlinator
by skwirlinator  6-4-2008   
 No Remarks
0
POPS
Youngest Supernova discovered by NC scientist
ruralart
by ruralart  6-4-2008   
 No Remarks
1
POPS
Electric Umbrella
alicebernardo
by alicebernardo  6-2-2008    2
 great idea, and also a instructable
4
POPS
Strange ring circles dead star
tabsey
by tabsey  6-1-2008   
 Strange universe, or multiverse, we live in.
3
POPS
Famous supernovae still echo across the Milky Way
tabsey
by tabsey  6-1-2008    1
 Read to understand pic. In 1572, the Danish astronomer Tycho Brahe observed and studied the explosion of a star that became known as Tycho's supernova. More than four centuries later, Chandra's X-ray photograph of the supernova remnant shows an expanding bubble of multimillion degree debris (green and red) inside a more rapidly moving shell of extremely high energy electrons (filamentary blue). Astronomers have detected a light echo from this supernova, meaning they can see the light from the explosion itself 400 years later.
0
POPS
DISCOVERY OF 12,000-YEAR-OLD TEMPLE COMPLEX COULD ALTER THEORY OF HUMAN DEVELOPMENT
A53GG4
by A53GG4  6-1-2008   
 No Remarks
6
POPS
The stunning image of massive star that died in a violent supernova explosion 325 years ago
lisaann2007
by lisaann2007  5-30-2008    1
 No Remarks
0
POPS
Supernova in real-time!
mariana3
by mariana3  5-25-2008   
 No Remarks
0
POPS
First Supernova Surface Explosion Observed
DanaGarrett
by DanaGarrett  5-22-2008   
 No Remarks
1
POPS
super nova
bnayan87
by bnayan87  5-22-2008   
 No Remarks
1
POPS
Exploding star caught in the act
pokkets
by pokkets  5-22-2008   
 Astronomers for years have been wondering if they'd ever see a 'live' supernova. They're few, quick, and you have to be looking in the right place at the right time. Seems they were. One of those things that may not happen again in our lifetimes - but you never know.
7
POPS
Astronomers Witness Supernova's First Moments
arifsali
by arifsali  5-21-2008    3
 Lucky catch supports longstanding view of supernova shock wave
3
POPS
Youngest Exploded Star In The Milky Way Is Discovered
merrie
by merrie  5-20-2008   
 It turns out, Green and his team came across the remnants, now called G1.9+0.3, more than 20 years ago using the Very Large Array (VLA) radio telescope in Socorro, NM, and estimated the object’s age to be 400-1,000 years old. It is near the center of the Milky Way, some 25,000 light-years from Earth. By comparing notes, the astronomers learned the images taken more than two decades apart documented the expansion of debris from the star's explosion. The images taken in 2007 were about 16 percent larger than the ones taken in 1985. "This is a huge difference," said Reynolds. "It means the explosion debris is expanding very quickly, which in turn means the object is much younger than we originally thought." Reynolds also observed the object with the VLA radio telescope to confirm the supernova remnant's rapid expansion. Unlike visible-light telescopes, radio and X-ray telescopes can penetrate the thick clouds of gas and dust in our galaxy.
2
POPS
1868 Supernova -Youngest in the Milky Way- Discovered
tabsey
by tabsey  5-18-2008   
 The most recent one known until now occurred around 1680, creating the remnant called Cassiopeia A. The newly-discovered object is the remnant of an explosion only about 140 years ago.
4
POPS
Discovery of Most Recent Supernova in Our Galaxy
einbar
by einbar  5-15-2008   
 No Remarks
0
POPS
NASA announcement
masalkar
by masalkar  5-15-2008   
 No Remarks
10
POPS
Discovery of most recent supernova in our galaxy
arifsali
by arifsali  5-14-2008   
 No Remarks
— end of the list —
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