Some galaxies hit a point in their lives when their star formation is snuffed out, and they become "quenched". Quenched galaxies in the distant past appear to be much smaller than the quenched galaxies in the Universe today. ...
Astronomy
Aug 1, 2013
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(Phys.org) —How much light has been emitted by all galaxies since the cosmos began? After all, every photon (particle of light) from ultraviolet to far infrared wavelengths ever radiated by all galaxies that ever existed ...
Astronomy
May 24, 2013
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Inside the natural history museums of the world are billions of animal and plant specimens from birds, fish and beetles to flowers, mushrooms and grasses, all stacked, stored and preserved in jars and collection drawers.
Plants & Animals
May 23, 2013
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(Phys.org) —Physicists analysing observations from the Herschel Space Observatory have shown that galaxies in the early Universe were cooler than those we see around us today.
Astronomy
May 3, 2013
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The European Space Agency (ESA) has selected three NASA-nominated science teams to participate in their planned Euclid mission, including one led by NASA's Goddard Space Flight Center in Greenbelt, Md.
Astronomy
Feb 12, 2013
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(Phys.org)—Radio-astronomical observations of a distant galaxy indicate that the ratio of the proton's mass to that of the electron has hardly changed over cosmic history. This fundamental constant of nature has changed ...
Astronomy
Dec 13, 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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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 be the most distant ...
Astronomy
Sep 19, 2012
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To build a planet you need lots of rubble and that means lots of heavy elements – stuff more massive than atoms of hydrogen and helium. The elemental composition of the collapsing nebula that gave birth to the Sun and the ...
Astronomy
Aug 31, 2012
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An international team of astronomers has for the first time determined the distance of the galaxy HDF850.1. The discovery challenges and expands our understanding of how galaxies are born and develop over time.
Astronomy
Jun 18, 2012
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