<p></p> <p>Scientists often use the combined power of multiple telescopes to reveal the secrets of the Universe – and this image is a prime example of when this technique is strikingly
<p></p> <p>Fast-moving magnetic waves emanating from a distant supermassive black hole undulate like a whip whose handle is being shaken by a giant hand, according to a new study using data
AAVSO Alert Notice 523<br /> Correction to AAVSO Alert Notice 522<br /> July 1, 2015<br /> <p>In <a href="https://www.nightskyobserver.com/aavso-alerts/aavso-alert-notice-522-v404-cyg-hst-multiwavelength-observations-scheduled/">AAVSO Alert Notice 522</a> on the upcoming observations of the black hole X-ray binary V404
AAVSO Alert Notice 522<br /> V404 Cyg HST multiwavelength observations scheduled<br /> July 1, 2015<br /> <p>The dramatic outburst of the black hole X-ray transient LMXB V404 Cyg continues. It was detected 2015
<p></p> <p>Astronaut John Mace Grunsfeld remembers a quirky discovery back in 1999. He had just arrived at the Hubble Space Telescope and climbed out of the airlock of Space Shuttle Discovery
<p></p> <p>Astronomers using NASA’s Chandra X-ray Observatory have discovered the largest and brightest set of rings from X-ray light echoes ever observed. These extraordinary rings, produced by an intense flare from
AAVSO Alert Notice 520<br /> X-ray nova and LMXB V404 Cyg in rare outburst<br /> June 18, 2015<br /> <p>V404 Cyg, an X-ray nova and a low mass X-ray binary (LMXB) with black
<p><a rel="nofollow" href="http://imgsrc.hubblesite.org/hu/db/images/hs-2015-15-a-web_print.jpg" target="_blank"></a></p> <p>Scientists using NASA’s Hubble Space Telescope have discovered that the immense halo of gas enveloping the Andromeda galaxy, our nearest massive galactic neighbor, is about six times
<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></p> <p>NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) and ESA’s (European Space Agency) XMM-Newton telescope are showing that fierce winds from a supermassive black hole blow outward in all directions — a