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 132012
 
Dark Energy Exists!

  Dark energy, a mysterious substance thought to be speeding up the expansion of the Universe is really there, according to a team of astronomers at the University of Portsmouth and LMU University Munich. A visual impression of the data used in the study representing the relevant extra-galactic maps as shells of increasing distance from [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]

aug 122012
 
A Wrinkle in Space-Time

  Mathematicians at UC Davis have come up with a new way to crinkle up the fabric of space-time — at least in theory. Illustration of twisted space-time around Earth. Image Credit: NASA “We show that space-time cannot be locally flat at a point where two shock waves collide,” said Blake Temple, professor of mathematics [continue reading]

aug 032012
 
The Awakening of a Distant Galaxy's Dormant Black Hole

  Last year, astronomers discovered a quiescent supermassive black hole in a distant galaxy that erupted after shredding and consuming a passing star. Now researchers have identified a distinctive X-ray signal observed in the days following the outburst that comes from matter on the verge of falling into the black hole.  This illustration highlights the [continue reading]