More than 100 million years has been wiped off the age of the first stars but there is still the question of what happened in the first billion years of the universe.
Astronomy
Feb 18, 2015
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43
The universe was created 13.7 billion years ago in a blaze of light: the big bang. Roughly 380,000 years later, after matter (mostly hydrogen) had cooled enough for neutral atoms to form, light was able to traverse space ...
Astronomy
Apr 20, 2015
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70
In 1969, the astrophysicists Rashid Sunyaev and Yakov Zel'dovich realized that the then recently discovered cosmic microwave background radiation (CMBR) would be distorted by hot cosmic gas. Hot electrons in the intergalactic ...
Astronomy
Mar 13, 2015
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63
Using the Atacama Large Millimeter/submillimeter Array (ALMA), of which ESO is a partner, astronomers have discovered a large reservoir of hot gas in the still-forming galaxy cluster around the Spiderweb galaxy—the most ...
Astronomy
Mar 29, 2023
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370
(PhysOrg.com) -- Last night, the detectors of Planck's High Frequency Instrument reached their amazingly low operational temperature of -273°C, making them the coldest known objects in space. The spacecraft has also just ...
Space Exploration
Jul 3, 2009
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0
From its orbit 930,000 miles above Earth, the Planck space telescope spent more than four years detecting the oldest light in the universe, called the cosmic microwave background. This fossil from the Big Bang fills every ...
Astronomy
Feb 17, 2015
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37
In 1996 Uros Seljak was a postdoc at Harvard, contemplating ways to extract information from the cosmic microwave background (CMB). The distribution of anisotropies, slight temperature differences, in the CMB had much to ...
General Physics
Mar 19, 2014
12
0
Portrayed in this image from ESA's Planck satellite are the two Magellanic Clouds, among the nearest companions of our Milky Way galaxy. The Large Magellanic Cloud, about 160 000 light-years away, is the large red and orange ...
Astronomy
Sep 7, 2015
4
122
(PhysOrg.com) -- X-ray observations made by the Suzaku observatory provide the clearest picture to date of the size, mass and chemical content of a nearby cluster of galaxies. The study also provides the first direct evidence ...
Astronomy
Mar 24, 2011
7
0
When fast radio bursts, or FRBs, were first detected in 2001, astronomers had never seen anything like them before. Since then, astronomers have found a couple of dozen FRBs, but they still don't know what causes these rapid ...
Astronomy
Sep 21, 2017
0
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