The existence of the "Hubble Bubble" may explain, at least in part, the differing measurements for the expansion and therefore the age of the universe. That is the assumption of a team of physicists headed by Prof. Dr. Luca ...
Astronomy
Sep 9, 2013
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A pair of experimental atomic clocks based on ytterbium atoms at the National Institute of Standards and Technology (NIST) has set a new record for stability. The clocks act like 21st-century pendulums or metronomes that ...
General Physics
Aug 22, 2013
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(Phys.org) —With the advent of powerful space infrared telescopes like the Spitzer Space Telescope and the (recently deceased) Herschel Space Telescope, astronomers have been able to study the properties of dust in galaxies ...
Astronomy
Jun 10, 2013
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(Phys.org) —Researchers at the National Institute of Standards and Technology in Boulder Colorado have succeeded in building a record breaking clock—one that has an instability of just one part in 10-18. They describe ...
(Phys.org) —At some stage after its birth in the big bang, the universe began to make galaxies. No one knows exactly when, or how, this occurred. For that matter, astronomers do not know how the lineages of our own Milky ...
Astronomy
Apr 12, 2013
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(Phys.org) —Galaxies today come very roughly in two types: reddish, elliptically shaped collections of older stars, and bluer, spiral shaped objects dominated by young stars. The conventional wisdom is that the two types ...
Astronomy
Apr 3, 2013
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A technique to create the shortest X-ray pulses ever made is proposed in Physical Review Letters. The capability would generate a deeper understanding of how medicines interact within the body and of catalytic processes in ...
General Physics
Mar 13, 2013
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A metal-poor star located merely 190 light-years from the Sun is 14.46+-0.80 billion years old, which implies that the star is nearly as old as the Universe! Those results emerged from a new study led by Howard Bond. Such ...
Astronomy
Feb 25, 2013
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(Phys.org)—Since its launch in 2001, the Wilkinson Microwave Anisotropy Probe (WMAP) space mission has revolutionized our view of the universe, establishing a cosmological model that explains a widely diverse collection ...
Astronomy
Dec 21, 2012
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(Phys.org)—One of the major puzzles in astronomy today is the nature of the mysterious force that astronomers have dubbed Dark Energy. And one tool in understanding this force is encoded in the distribution of clusters ...
Astronomy
Nov 20, 2012
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