In discussions of anthropogenic climate change, carbon dioxide generally gets the spotlight, but it is not the only greenhouse gas spewed into the atmosphere by human activity, nor is it the most potent.
Environment
Aug 12, 2019
0
170
Japanese astronomers report the identification of a new ultra-luminous infrared galaxy (ULIRG) as part of the search for far-infrared-bright but optically faint objects. The newly detected ULIRG, designated AKARI-FIS-V2 J0916248+073034, ...
Collimated jets provide astronomers with some of the most powerful evidence that a supermassive black hole lurks in the heart of most galaxies. Some of these black holes appear to be active, gobbling up material from their ...
Astronomy
Oct 17, 2018
203
122
Most sunlight striking the Earth is absorbed by its surfaces, oceans and atmosphere. As a result of this warming, infrared radiation is emitted constantly all around us-estimated to be millions of Gigawatts per second. A ...
Optics & Photonics
Feb 5, 2018
0
148
A new study in Physical Review Letters reveals that the series of infrared (IR) band peaks, collectively known as the cosmic unidentified IR emission, arises as a consequence of the wavelike behavior of delocalized electrons ...
Astronomy
Oct 25, 2017
1
33
Some materials luminesce, changing their color and intensity when under mechanical forces such as grinding or rubbing. These luminescent "mechanochromic" materials can produce various emission colors in the visible light ...
Materials Science
May 31, 2017
0
4
Most if not all galaxies are thought to host a supermassive black hole in their nuclei. It grows by accreting mass, and while feeding it is not hidden from our view: it generates X-ray emission and ultraviolet that heats ...
Astronomy
May 16, 2017
2
47
Astronomers have used NASA's Chandra X-ray Observatory and other telescopes to show that a recently-discovered galaxy is undergoing an extraordinary boom of stellar construction. The galaxy is 12.7 billion light years from ...
Astronomy
Dec 8, 2016
15
733
Supermassive black holes, with their immense gravitational pull, are notoriously good at clearing out their immediate surroundings by eating nearby objects. When a star passes within a certain distance of a black hole, the ...
Astronomy
Sep 15, 2016
3
65
Was it a catastrophic collision in the star's asteroid belt? A giant impact that disrupted a nearby planet? A dusty cloud of rock and debris? A family of comets breaking apart? Or was it alien megastructures built to harvest ...
Astronomy
Nov 25, 2015
6
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