Browse by Tags

All Tags » Dark Energy   (RSS)
25 August 2008
Cosmic 'Needle in a Haystack' Confirms Dark Energy
A massive cluster of galaxies seen in the distant universe by ESA’s orbiting XMM-Newton x-ray observatory is so big that astronomers believe there can only be a few of them that far away in space and time. “Such massive galaxy clusters are thought to be rare objects in the distant Universe," said Georg [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments
Filed under: ,
 
21 July 2008
The Cosmic Void: Could we be in the Middle of it?
On large scales, the Universe is homogeneous and isotropic. This means that no matter where you are located in the cosmos, give or take the occasional nebula or galactic cluster, the night sky will appear approximately the same. Naturally there is some 'clumpiness' in the distribution of the stars and galaxies, but generally the density [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments
Filed under: ,
 
24 June 2008
Huge Camera to Observe Dark Energy
Discovering the universe is accelerating and not slowing down made it obvious to astronomers there’s a lot we don’t know about the universe; namely, a big chunk of it is missing from our visible observations. Astronomers determined roughly 4% of the universe is made up of ordinary matter and 22% of Dark Matter (inferred [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments
Filed under:
 
05 March 2008
That Dark Stuff, Matter and Energy
Being a very hands-on-type person, I have a hard time wrapping my brain around the concepts of dark energy and dark matter. These are invisible, hypothetical stuffs that cosmologists tell us make up a combined 96% of the universe. These ubiquitous substances are unlike anything we’re familiar with. They don’t emit or [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments  
06 February 2008
Dark Matter and Dark Energy… the Same Thing?
I've said it many times, but it bears repeating: regular matter only accounts for 4% of the Universe. The other 96% - dark matter and dark energy - is a total mystery. Wouldn't it be convenient if we could find a single explanation for both? Astronomers from the University of St. Andrews are ready to [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments  
04 February 2008
Building a Map of Dark Energy
Understanding dark energy is probably one of the largest mysteries in cosmology right now. Figure this out, and a Nobel Prize in physics is assured. But it won't give up its secrets so easily. Since they can't measure dark energy directly, astronomers can only measure its effects on the large-scale structures of the Universe, [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments
Filed under:
 
23 January 2008
Large Hadron Collider Could Detect "Unparticles"
Understanding the mysterious dark matter in our universe is paramount to cosmologists. Dark matter and dark energy makes up the vast majority of mass in the observable universe. It influences galaxy rotation, galactic clusters and even holds the answer to our universe's fate. So, it is unsurprising to hear about some outlandish physics behind the [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments
Filed under: ,
 
14 January 2008
Finding Dark Energy in a Supercomputer
Dark energy is probably the most influential force in the cosmos, overwhelming the pull of dark matter, and absolutely dominating the meager impact of regular matter. And scientists have absolutely no idea what it is. But a new supercomputer simulation by cosmologists at Durham University might give astronomers a few places to look; to know [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments
Filed under:
 
12 October 2007
Has Dark Energy Always Been Constant?
Dark energy is that mysterious force that seems to be accelerating the expansion of the Universe. But the question is: has it always been pushing the Universe apart with the same force, or was it weaker or stronger in the past, and will it get stronger in the future? Researchers from the Harvard-Smithsonian Center for [...]
Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!
0 Comments
Filed under: