The Sky Tonight

October 24, 2015

Suzaku satellite reveals the average chemical composition of our Universe
Tokyo, Japan (SPX) Oct 23, 2015
All of the chemical elements that are heavier than carbon, the oxygen we breathe, the silicon that makes up the sand on the beach, were produced inside stars through nuclear fusion and released by stellar explosions called supernovae. By measuring the chemical composition of the Universe, scientists are trying to reconstruct the history of how, when, and where each of the chemical elements so necessary for the evolution of life were produced. Very generally speaking, there are two ways that a supe ... read more

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Cassini Begins Series of Flybys with Close-up of Saturn Moon Enceladus

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Comet Encke: A solar windsock observed by NASA's STEREO

VLA Reveals Spectacular "Halos" of Spiral Galaxies

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On the precision frontier: A new calculation holds promise

Scientists produce shortest electron bunches ever by surfing plasma waves

A particle purely made of nuclear force

Blast waves in the Sun's atmosphere

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