The New York Times: Research by Saul Perlmutter and other groups over the last few years have started to destroy the general belief by astronomers that a simple model of the universe could explain most of the phenomena observed by astronomers. According to the latest observations, 96% of the mass of the universe is missing. Says Lawrence M. Krauss, “We’re just a bit of pollution.... If you got rid of us, and all the stars and all the galaxies and all the planets and all the aliens and everybody, then the universe would be largely the same. We’re completely irrelevant.” Richard Panek summarizes in the New York Times, what astronomers know about the missing mass, and their speculations over what it is.
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.