News tagged with wavelength of light

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Sun-free photovoltaics

A new photovoltaic energy-conversion system developed at MIT can be powered solely by heat, generating electricity with no sunlight at all. While the principle involved is not new, a novel way of engineering ...

Jul 29, 2011
4.9 / 5 (11) 6 | with audio podcast

ALMA turns its eyes to Centaurus A

(Phys.org) -- A new image of the galaxy Centaurus A, made with the Atacama Large Millimeter/submillimeter Array (ALMA), shows how the observatory allows astronomers to see through the opaque dust lanes that ...

May 31, 2012
4.9 / 5 (10) 0 | with audio podcast

Astronomers discover cool stars in nearby space

(PhysOrg.com) -- An international team, led by astronomers at the University of Hertfordshire have discovered what may be the coolest sub-stellar body ever found outside our own solar system. Using the United ...

Jan 29, 2010
4.4 / 5 (11) 6 | with audio podcast

Small distant galaxies host supermassive black holes

(PhysOrg.com) -- Using the Hubble Space Telescope to probe the distant universe, astronomers have found supermassive black holes growing in surprisingly small galaxies. The findings suggest that central black ...

Sep 15, 2011
4.2 / 5 (10) 28 | with audio podcast

The power of spin

(PhysOrg.com) -- Supermasssive black holes - objects with masses of millions or billions of suns - are found at the nuclei of dramatic galaxies like quasars where they are responsible for some of the most ...

Jan 28, 2011
4.3 / 5 (9) 5

Elements of ExoPlanets

By looking at the wavelengths of light from nearby stars, researchers have determined the abundance of certain elements for more than a hundred stars. Trace elements in such stars may influence their habitable ...

Feb 02, 2012
4.9 / 5 (8) 0 | with audio podcast