ScienceNow: Hurricane Katrina had nothing on GRS1915. This black hole seems to be rotating at least 950 times per second, hundreds of thousands of times faster than Katrina. The measurement marks the first time astronomers have been able to quantify the spin of a black hole so directly, and the findings could bring physicists closer to verifying the source of elusive cosmic phenomena known as gamma-ray bursts.
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
January 29, 2026 12:52 PM
Get PT in your inbox
PT The Week in Physics
A collection of PT's content from the previous week delivered every Monday.
One email per week
PT New Issue Alert
Be notified about the new issue with links to highlights and the full TOC.
One email per month
PT Webinars & White Papers
The latest webinars, white papers and other informational resources.