Einstein’s theory of gravity still reigns supreme, even in the strongest gravitational environment yet probed.
As featured in my latest Nature article, a new experimental design by Jacob Bekenstein at Hebrew University of Jerusalem uses existing and relatively simple equipment to test how smooth space is.
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.