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]

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]

sep 282012
 
'Flashy' Secrets of Merging Black Holes Uncovered

  According to Einstein, whenever massive objects interact, they produce gravitational waves — distortions in the very fabric of space and time — that ripple outward across the Universe at the speed of light. While astronomers have found indirect evidence of these disturbances, the waves have so far eluded direct detection. Ground-based observatories designed to [continue reading]

sep 182012
 
The Dying Tones of Colliding Black Holes

  Researchers from Cardiff University have discovered a new property of black holes: their dying tones could reveal the cosmic crash that produced them. Black holes are regions of space where gravity is so strong that not even light can escape and so isolated black holes are truly dark objects and don’t emit any form of radiation. [continue reading]

sep 082012
 
New Unified Theory of Dark matter and Dark Energy

  A pair of mathematicians — one from Indiana University and the other from Sichuan University in China — have proposed a unified theory of dark matter and dark energy that alters Einstein’s equations describing the fundamentals of gravity. The Hubble deep field is a picture of the furthest we have ever seen out into [continue reading]

aug 292012
 
Binary White Dwarfs Produce Gravitational Waves

  A team of astronomers led by researchers from The University of Texas at Austin has confirmed the emission of gravitational waves from the second-strongest known source in our galaxy by studying the shrinking orbital period of a unique pair of burnt-out stars. Their observations tested Albert Einstein’s theory of general relativity in a new [continue reading]