<p><a href="http://www.nasa.gov/sites/default/files/thumbnails/image/15-077-nustar.jpg" target="_blank"></a></p> <p>Peering into the heart of the Milky Way galaxy, NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) has spotted a mysterious glow of high-energy X-rays that, according to scientists, could
<p style="text-align: center;"><em></em></p> <p>Astronomers have found a pulsating, dead star beaming with the energy of about 10 million suns. This is the brightest pulsar – a dense stellar remnant left over
AAVSO Alert Notice 504<br /> Epsilon Aur monitoring during predicted pulsation phase<br /> September 17, 2014 <p>Dr. Robert Stencel (University of Denver Astronomy Program) has requested that AAVSO observers monitor epsilon Aurigae from
<p style="text-align:center"></p> <p>Astronomers using NASA’s Hubble Space Telescope have discovered a companion star to a rare type of supernova. This observation confirms the theory that the explosion originated in a double-star
<p style="text-align: center;"></p> <p>Astronomers using ESA’s Integral gamma-ray observatory have demonstrated beyond doubt that dead stars known as white dwarfs can reignite and explode as supernovae. The finding came after the
<p style="text-align:center"></p> <p>New data from NASA’s Chandra X-ray Observatory offer a glimpse into the environment of a star before it exploded earlier this year, and insight into what triggered one of
<p style="text-align: center;"></p> <p>Astronomers using NASA’s Hubble Space Telescope for the first time have spotted a star system that later produced an unusual supernova explosion of a white dwarf, the stripped-down
<p style="text-align: center;"></p> <p>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.
<p><a href="http://www.jpl.nasa.gov/spaceimages/images/mediumsize/PIA17847_ip.jpg" target="_blank"></a></p> <p>The closest supernova of its kind to be observed in the last few decades has sparked a global observing campaign involving legions of instruments on the ground and
<p style="text-align: center;"></p> <p>Data from NASA’s Chandra X-ray Observatory has revealed faint remnants of a supernova explosion and helped researchers determine Circinus X-1 — an X-ray binary — is the youngest