Latest Accelerating universe Stories

Gravitational Lensing Confirmed As Source Of Super-Luminous Supernova
2014-04-25 08:51:29

Lawrence LeBlond for redOrbit.com - Your Universe Online Four years ago a team of scientists observed a supernova – PS1-10afx – shining brighter than any other in its class. Reporting the observation last year in the Astrophysics Journal Letters, University of Tokyo researchers said they had discovered the first Type Ia Supernova (SNIa) that exploded more than nine billion years ago. Now, the same team of researchers, led by Robert Quimby, of the University of Tokyo’s Kavli...

Dark Energy Hidden Behind Phantom Fields
2014-03-28 14:30:26

FECYT - Spanish Foundation for Science and Technology Quintessence and phantom fields, two hypotheses formulated using data from satellites, such as Planck and WMAP, are among the many theories that try to explain the nature of dark energy. Now researchers from Barcelona and Athens suggest that both possibilities are only a mirage in the observations and it is the quantum vacuum which could be behind this energy that moves our universe. Cosmologists believe that some three quarters of...

Study Uses Big Bang Afterglow To Show Earth Has No Special Place In Expanding Universe
2013-11-07 07:53:48

Dartmouth College In a new study, Dartmouth researchers rule out a controversial theory that the accelerating expansion of the universe is an illusion. While the findings don't explain the cosmic speed-up, they eliminate one provocative possibility that our planet, solar system and galaxy are at the center of the universe and that there is no dark energy. The findings appear in the journal Physical Review D. The 2011 Nobel Prize was awarded for the discovery that the expansion of the...

Black Holes Can Help Determine The Universe's Rate Of Expansion
2013-04-23 04:48:33

Alan McStravick for redOrbit.com - Your Universe Online In 2011, the Nobel Prize for Physics was awarded to a trio of researchers. Adam Riess, Saul Perlmutter and Brian Schmidt were able to determine that the speed and scope of the expansion of the universe is not so uniform as once believed. This simple discovery threw the whole prospect of dating and measuring time in galaxies far from our own. However, this week saw a multi-national collaboration come together to detail just how we...

2010-03-22 13:02:55

The Hubble Space Telescope will devote an unprecedented amount of time over the next few years to documenting galaxy evolution in the early universe and to studying whether distant supernovae can be extremely reliable measures of distance across vast regions of the cosmos. In this ambitious new project, Hubble will image more than 250,000 distant galaxies in five directions, providing the first comprehensive view of the structure and assembly of galaxies over the first third of cosmic time....

2008-10-21 14:50:00

Although we may believe humans know a lot about the Universe, there are still a lot of phenomena to be explained. A team of cosmologists from the University of the Basque Country are searching for the model that best explains the evolution of the Universe. We usually have an image of scientists who study the Universe doing so peering through a telescope. And, effectively, this is what astrophysicists do: gather data about the observable phenomena of the Universe. However, in order to...

2008-01-30 16:52:31

Astronomers have used ESO's Very Large Telescope to measure the distribution and motions of thousands of galaxies in the distant Universe. This opens fascinating perspectives to better understand what drives the acceleration of the cosmic expansion and sheds new light on the mysterious dark energy that is thought to permeate the Universe. "Explaining why the expansion of the Universe is currently accelerating is certainly the most fascinating question in modern cosmology," says Luigi Guzzo,...

Latest Accelerating universe Reference Libraries

2004-10-19 04:45:41

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...

2004-10-19 04:45:41

Accelerating universe -- In the late 1990s, observations of type I supernova produced the unexpected result that the expansion of the universe appears to be accelerating. These observations appear more firm as new data has appeared. This means that the speed with which a distant galaxy recedes from us increases over time. If this trend continues, eventually we won't be able to see any other galaxies any more. This new theory of the end of the Universe has been called the Big Rip....

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Word of the Day
  • A 'bachelor seal'; a young male seal which is prevented from mating by its herd's older males (mated bulls defending their territory).
This comes from the Russian word for 'bachelors.'