aug 152013
 
New Pulsar Reveals Feeding Habits of Milky Way’s Black Hole

  A team of astronomers, including Heino Falcke (Radboud University Nijmegen/ ASTRON) and Adam Deller (ASTRON), has discovered radio pulses from a neutron star practically next door to the supermassive black hole which resides at the center of the Milky Way. Radio ‘pulsars’ are rapidly spinning neutron stars, ubiquitous in the rest of the Milky [continue reading]

mei 132013
 
 First Exoplanet Found by Using New Method

  Detecting alien worlds presents a significant challenge since they are small, faint, and close to their stars. The two most prolific techniques for finding exoplanets are radial velocity (looking for wobbling stars) and transits (looking for dimming stars). A team at Tel Aviv University and the Harvard-Smithsonian Center for Astrophysics (CfA) has just discovered [continue reading]

apr 272013
 
Record-Breaking Pulsar Shows Einstein Was Right — So Far

  Astronomers have used ESO’s Very Large Telescope, along with radio telescopes around the world, to find and study a bizarre stellar pair consisting of the most massive neutron star confirmed so far, orbited by a white dwarf star. This strange new binary system allows tests of Einstein’s theory of gravity — general relativity — [continue reading]

feb 282013
 
The Mystery of a Super-Fast Spinning Supermassive Black Hole

  Two X-ray space observatories, NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) and the European Space Agency’s XMM-Newton, have teamed up to measure definitively, for the first time, the spin rate of a black hole with a mass 2 million times that of our Sun.  This artist’s concept illustrates a supermassive black hole with millions to [continue reading]

okt 152012
 
Traveling Faster Than the Speed of Light

  University of Adelaide applied mathematicians have extended Einstein’s theory of special relativity to work beyond the speed of light. Albert Einstein in 1947. Image Credit: Oren Jack Turner, Princeton, N.J. Einstein’s theory holds that nothing could move faster than the speed of light, but Professor Jim Hill and Dr Barry Cox in the University’s School [continue reading]

okt 052012
 
Star Racing Around Black Hole at Center of our Milky Way

  UCLA astronomers report the discovery of a remarkable star that orbits the enormous supermassive black hole at the center of our Milky Way galaxy in a blistering 11-and-a-half years — the shortest known orbit of any star near this black hole. The research is published Oct. 5 in the journal Science.   The two W. [continue reading]