Tag Archives: Einstein

Profile of John Kovac, whose team appears to have confirmed that the universe underwent an enormous growth spurt during the first tiny fraction of a second of its existence

Profile of John Kovac, whose team appears to have confirmed that the universe underwent an enormous growth spurt during the first tiny fraction of a second of its existence

Einstein’s theory of gravity still reigns supreme, even in the strongest gravitational environment yet probed

Einstein’s theory of gravity still reigns supreme, even in the strongest gravitational environment yet probed.

The ever-tighter orbit of two stars, as predicted by the theory of relativity.
The ever-tighter orbit of two stars, as predicted by the theory of relativity. Credit: Luis Calcada/ESO

A New Test for Einstein with Free-floating Giant Black Holes [Science]

Are there massive black holes that move about the universe? In my recent article in Science notes, initial observations with the Hubble Space Telescope and follow-up data collection using NASA’s Chandra x-ray Observatory suggest this is the case. If so, then this would verify Einstein’s theory of general relativity under previously untested conditions.

Do Solo Black Holes Roam the Universe?

Even gravitational monsters can get the heave-ho. Two mysterious bright spots in a disheveled, distant galaxy suggest that astronomers have found the best evidence yet for a supermassive black hole being shoved out of its home.

Observations with NASA’s Chandra x-ray Observatory revealed that only one of the compact visible-light sources—a blob that lies about 8000 light-years from the galaxy’s estimated center—emits x-rays. The high-energy radiation is believed to be a sign that this blob is a supermassive black hole munching away on surrounding gas.

Even better than the image below, this short video explains how the big black hole may have formed.

Credit: NASA/CXC/SAO/F. Civano et al./STScI/CFHT
Credit: NASA/CXC/SAO/F. Civano et al./STScI/CFHT