(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 ...
Apr 12, 2013
5 / 5 (17)
53
|
(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 ...
Apr 03, 2013
4.5 / 5 (2)
0
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 new ...
Mar 13, 2013
5 / 5 (4)
0
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 metal-poor stars are (s ...
Feb 25, 2013
4.5 / 5 (19)
19
(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 ...
Dec 21, 2012
4.8 / 5 (30)
74
|
(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 ...
Nov 20, 2012
4.9 / 5 (9)
1
|
(Phys.org)—A comprehensive study of hundreds of galaxies observed by the Keck telescopes in Hawaii and NASA's Hubble Space Telescope has revealed an unexpected pattern of change that extends back 8 billion ...
Oct 19, 2012
4.7 / 5 (21)
64
|
(Phys.org)—Dust is an annoyance in everyday life, but an important building block of stars and planets. As such, astronomers need to understand how cosmic dust forms over time—it's an integral step in ...
Oct 09, 2012
5 / 5 (4)
10
|
With the combined power of NASA's Spitzer and Hubble space telescopes as well as a cosmic magnification effect, a team of astronomers led by Wei Zheng of The Johns Hopkins University has spotted what could ...
Sep 19, 2012
5 / 5 (20)
121
|
Physicists Andrea Pocar and Krishna Kumar of the University of Massachusetts Amherst, part of an international research team, recently reported results of an experiment conducted at the Enriched Xenon Observatory ...
Jul 19, 2012
3.9 / 5 (8)
0
|
In the biggest result of its kind in more than ten years, physicists have made the most sensitive measurements yet in a decades-long hunt for a hypothetical and rare process involving the radioactive decay ...
Jun 04, 2012
4.7 / 5 (12)
13
|
(PhysOrg.com) -- A proposed new time-keeping system tied to the orbiting of a neutron around an atomic nucleus could have such unprecedented accuracy that it neither gains nor loses 1/20th of a second in 14 ...
Mar 08, 2012
4.6 / 5 (28)
11
|
(PhysOrg.com) -- Astronomy has a powerful new tool to probe the structure of our galaxy. The Apache Point Observatory Galactic Evolution Experiment (APOGEE) spectrograph is the newest instrument deployed by ...
Jan 09, 2012
4.3 / 5 (3)
0
(PhysOrg.com) -- For almost sixty years, the world has considered the atomic clock the gold standard for keeping time. Its accuracy is such that it drifts by only about four seconds over a period of about ...
Nov 09, 2011
5 / 5 (10)
51
|
(PhysOrg.com) -- Pushing the limits of its powerful vision, NASA's Hubble Space Telescope uncovered the oldest burned-out stars in our Milky Way Galaxy in this image from 2002. These extremely old, dim "clockwork ...
Nov 03, 2011
3.7 / 5 (3)
2
