News tagged with white dwarfs

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Into the eye of the helix

(PhysOrg.com) -- The Helix Nebula, NGC 7293, lies about 700 light-years away in the constellation of Aquarius (the Water Bearer). It is one of the closest and most spectacular examples of a planetary nebula.

dateFeb 25, 2009 in Astronomy
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Origin of Key Cosmic Explosions Still a Mystery

(PhysOrg.com) -- When a star explodes as a supernova, it shines so brightly that it can be seen from millions of light-years away. One particular supernova variety - Type Ia - brightens and dims so predictably ...

dateJul 12, 2010 in Astronomy
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Giant Planet Set for a Cataclysmic Show

(PhysOrg.com) -- A team of Chinese astronomers have discovered a giant planet close to the exotic binary star system QS Virginis. Although dormant now, in the future the two stars will one day erupt in a violent ...

dateDec 16, 2009 in Astronomy
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Team finds Type Ia supernovae parents

Type Ia supernovae are violent stellar explosions whose brightness is used to determine distances in the universe. Observing these objects to billions of light years away has led to the discovery that the universe is expanding ...

dateAug 11, 2011 in Astronomy
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HARPS-NEF to comb Kepler targets for new Earths

Astronomers have announced plans to build an ultra-stable, high-precision spectrograph for the Science and Technology Facilities Council's 4.2-m William Herschel Telescope (WHT - part of the Isaac Newton Group ...

dateApr 20, 2009 in Astronomy
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New suspect identified in supernova explosion

(Phys.org) —Supernovas are often thought of as the tremendous explosions that mark the ends of massive stars' lives. While this is true, not all supernovas occur in this fashion. A common supernova class, ...

dateJun 04, 2014 in Astronomy
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Fermi detects gamma-rays from exploding nova

Using the Large Area Telescope (LAT) onboard NASA's Fermi Gamma-ray Space Telescope satellite, astronomers have detected gamma rays from a nova for the first time, a finding that surprises both observers and ...

dateAug 23, 2010 in Astronomy
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