Latest Dark energy Stories
WASHINGTON, May 19, 2011 /PRNewswire-USNewswire/ -- A five-year survey of 200,000 galaxies, stretching back seven billion years in cosmic time, has led to one of the best independent confirmations that dark energy is driving our universe apart at accelerating speeds. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The survey used data from NASA's space-based Galaxy Evolution Explorer and the Anglo-Australian Telescope on Siding Spring Mountain in Australia. The findings offer...
According to NASA, dark energy is driving our universe apart at an accelerated rate.
The biggest 3-D map of the distant universe ever made, using light from 14,000 quasars â€“ supermassive black holes at the centers of galaxies billions of light years away â€“ has been constructed by scientists with the third Sloan Digital Sky Survey (SDSS-III).
Astronomers using NASA's Hubble Space Telescope have ruled out an alternate theory on the nature of dark energy after recalculating the expansion rate of the universe to unprecedented accuracy.
WASHINGTON, March 14, 2011 /PRNewswire-USNewswire/ -- Astronomers using NASA's Hubble Space Telescope have ruled out an alternate theory on the nature of dark energy after recalculating the expansion rate of the universe to unprecedented accuracy. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The universe appears to be expanding at an increasing rate.
Cosmologists have come up with a new way to solve their problems -- they are inviting scientists, including those from totally unrelated fields, to participate in a grand competition.
Astronomers using NASA's Hubble Space Telescope took advantage of a giant cosmic magnifying glass to create one of the sharpest and most detailed maps of dark matter in the universe.
Astronomers using the South Pole Telescope report that they have discovered the most massive galaxy cluster yet seen at a distance of 7 billion light-years.
After nine years of scanning the sky, the Wilkinson Microwave Anisotropy Probe (WMAP) space mission has concluded its observations of the cosmic microwave background, the oldest light in the universe.
What can scientists hope to learn in the coming decade about the most basic questions about the cosmos and our place in it â€“ from extraterrestrial life to the evolution of the Universe â€“ while keeping to an earthbound budget?
Image Caption: The Hubble Extreme Deep Field (XDF) was completed in September 2012 and shows the farthest galaxies ever photographed by humans. Each speck of light in the photo is an individual galaxy, some of them as old as 13.2 billion years; the observable universe is estimated to contain more than 200 billion galaxies. Credit: NASA/Wikipedia What is Cosmology? I once commented to an acquaintance that I was fascinated by the field of Cosmology, and mused that if I had more time, I...
Quintessence (Dark Energy) -- Quintessence or dark energy is a hypothetical form of energy postulated to exist in order to explain observations of an accelerating universe. This energy would act like a vacuum pressure, pushing things apart. Other attempts to explain these recent observations involve a non-zero cosmological constant, which has the same effect. Indeed, sometimes quintessence is said to result in a non-zero cosmological constant, and conversely a non-zero cosmological...
Wilkinson Microwave Anisotropy Probe (WMAP) -- The Wilkinson Microwave Anisotropy Probe (WMAP) was launched on June 30, 2001 at 3:46 p.m. EDT at Cape Canaveral Air Force Station, Florida, USA. The goal of WMAP was to map out minute differences in the Cosmic Microwave Background (CMB) radiation which would help test theories of the nature of the universe. On February 11, 2003, the public relations group from NASA made a press release regarding the age and composition of the universe....
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