Latest Big Bang Stories
'Bolshoi' supercomputer simulation provides new benchmark for cosmological studies.
Researchers have developed a method for detecting the collision of stars with a black hole that could help scientists uncover dark matter.
ESA's Herschel infrared space observatory has discovered that galaxies do not need to collide with each other to drive vigorous star birth.
Researchers have resurrected the theory that other universes lie within "bubbles" of space and time, known as the "Multiverse" theory.
An Australian PhD student has created the most accurate measurements for determining how fast the Universe is expanding.
Ohio State University researchers are leveraging powerful supercomputers to investigate one of the key observational probes of "dark energy," the mysterious energy form that is causing the expansion of the universe to accelerate over time.
SILVER SPRING, Md., July 6, 2011 /PRNewswire/ --There is no more all-encompassing source of mystery than the universe. Since the dawn of humanity, its vastness has elicited endless wonder and questions that have consumed mankind's intellect and imagination.
Scientists said on Wednesday that they have discovered the most distant quasar to date, thriving at a time when the Universe was less than 800 million years old.
Electrons have been found to be almost, but not quite, perfectly round.
Early results from dramatically upgraded telescope show breadth of scientific impact.
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...
Large-Scale Structure of the Cosmos -- Stars are organised into galaxies which in turn appear to form clusters and superclusters, separated by voids. Prior to 1989 it was commonly assumed that the superclusters were the largest structures in existence, and that they were distributed more-or-less uniformly throughout the universe in every direction. However, in 1989, Margaret Geller and John Huchra discovered the "Great Wall", a sheet of galaxies more than 500 million light years long...
Cosmology -- area of science that aims at a comprehensive theory of the structure and evolution of the entire physical universe. Modern Cosmological Theories Present models of the universe hold two fundamental premises: the cosmological principle and the dominant role of gravitation. Derived by Hubble, the cosmological principle holds that if a large enough sample of galaxies is considered, the universe looks the same from all positions and in all directions in space. The second point...
Redshift -- Redshift is the phenomenon that the frequency of light when observed, under certain circumstances, can be lower than the frequency of light when it was emitted at the source. This usually occurs when the source moves away from the observer, as in the Doppler effect. More specifically, the term redshift is used for the observation that the spectrum of light emitted by distant galaxies is shifted to lower frequencies (towards the red end of the spectrum, hence the name) when...
Quasar -- A quasar (from quasi-stellar radio source) is an astronomical object that looks like a star in optical telescopes (i.e. it is a point source), but has a very high redshift. The general consensus is that this high redshift is cosmological, the result of Hubble's law and that their redshift indicates that they are typically very distant from Earth; we observe them as they were several billions of years ago. Since we can see them despite their distance, they must emit more...
- A ceramic container used inside a fuel-fired kiln to protect pots from the flame.