Astrophysical Journal

Hubble sees 'ghost light' from dead galaxies

( —NASA's Hubble Space Telescope has picked up the faint, ghostly glow of stars ejected from ancient galaxies that were gravitationally ripped apart several billion years ago. The mayhem happened 4 billion light-years ...

dateOct 30, 2014 in Astronomy
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Half of all exoplanet host stars are binaries

( —Imagine living on an exoplanet with two suns. One, you orbit and the other is a very bright, nearby neighbor looming large in your sky. With this "second sun" in the sky, nightfall might be a rare event, perhaps ...

dateSep 04, 2014 in Astronomy
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Fermi finds a 'transformer' pulsar

( —In late June 2013, an exceptional binary containing a rapidly spinning neutron star underwent a dramatic change in behavior never before observed. The pulsar's radio beacon vanished, while at the same time the ...

dateJul 22, 2014 in Astronomy
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Transiting exoplanet with longest known year

Astronomers have discovered a transiting exoplanet with the longest known year. Kepler-421b circles its star once every 704 days. In comparison, Mars orbits our Sun once every 780 days. Most of the 1,800-plus exoplanets discovered ...

dateJul 21, 2014 in Astronomy
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