NASA's Goddard Space Flight Center

Fermi shows that Tycho's star shines in gamma rays

( -- In early November 1572, observers on Earth witnessed the appearance of a "new star" in the constellation Cassiopeia, an event now recognized as the brightest naked-eye supernova in more than 400 years. It's ...

dateDec 13, 2011 in Astronomy
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Hubble confirms: galaxies are ultimate recyclers

( -- New observations by NASA's Hubble Space Telescope are expanding astronomers' understanding of the ways in which galaxies continuously recycle immense volumes of hydrogen gas and heavy elements. This process ...

dateNov 17, 2011 in Astronomy
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'Odd couple' binary makes dual gamma-ray flares

( -- In December 2010, a pair of mismatched stars in the southern constellation Crux whisked past each other at a distance closer than Venus orbits the sun. The system possesses a so-far unique blend of a hot ...

dateJun 29, 2011 in Astronomy
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Hubble views the star that changed the universe

( -- Though the universe is filled with billions upon billions of stars, the discovery of a single variable star in 1923 altered the course of modern astronomy. And, at least one famous astronomer of the time ...

dateMay 23, 2011 in Astronomy
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