<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
<p style="text-align: center;"></p> <p>One of the biggest mysteries in astronomy, how stars blow up in supernova explosions, finally is being unraveled with the help of NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR).</p> <p>The
<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
<p style="text-align:center"></p> <p>Astronomers using NASA’s Hubble Space Telescope have found the building blocks of solid planets that are capable of having substantial amounts of water. This rocky debris, currently orbiting a
<p style="text-align:center" class="small"><br /> <em>In this composite image, visible-light observations by NASA’s Hubble Space Telescope are combined with infrared data from the ground-based Large Binocular Telescope in Arizona to assemble a
<p>Astronomers using NASA’s Swift satellite and Fermi Gamma-ray Space Telescope are seeing frequent blasts from a stellar remnant 30,000 light-years away. The high-energy fireworks arise from a rare type of