News tagged with infrared radiation

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A new class of extragalactic objects

A blazar is a galaxy with an intensely bright central nucleus containing a supermassive black hole, much like a quasar. The difference is that a blazar can emit light with extremely high energy gamma rays that are sometimes ...

dateOct 29, 2012 in Astronomy
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Twists and turns in interacting galaxies

(—Almost thirty years ago the Infrared Astronomy Satellite, IRAS, discovered that the universe contained many fabulously luminous galaxies, some of them more than a thousand times brighter than our own galaxy, ...

dateOct 08, 2012 in Astronomy
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The Helix nebula: Bigger in death than life

(—A dying star is refusing to go quietly into the night, as seen in this combined infrared and ultraviolet view from NASA's Spitzer Space Telescope and the Galaxy Evolution Explorer (GALEX), which NASA has lent ...

dateOct 04, 2012 in Astronomy
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Solar cells made from black silicon

Solar cells convert three-quarters of the energy contained in the Sun's spectrum into electricity – yet the infrared spectrum is entirely lost in standard solar cells. In contrast, black silicon solar cells are specifically ...

dateOct 01, 2012 in Energy & Green Tech
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Fireworks in the early universe

Galaxies in the early universe grew fast by rapidly making new stars. Such prodigious star formation episodes, characterized by the intense radiation of the newborn stars, were often accompanied by fireworks in the form of ...

dateSep 28, 2012 in Astronomy
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Shaking up biomolecules with light

(—In living organisms, biomolecules such as proteins are constantly in complex motion, bending and flexing in different ways at different points. Each molecule has its own vibrational dynamics which affects its ...

dateSep 28, 2012 in General Physics
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A surprisingly bright superbubble

(—This composite image shows a superbubble in the Large Magellanic Cloud (LMC), a small satellite galaxy of the Milky Way located about 160,000 light years from Earth.

dateAug 30, 2012 in Astronomy
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