NPR: Van Gogh, N.C. Wyeth, and other artists recycled canvases by painting over previous works. Today museum scientists are using new x-ray technology to uncover the outline of hidden paintings, and using chemistry to fill in the colors. Jennifer Mass, senior scientist at the scientific research and analysis laboratory at the Winterthur Museum, explains the techniques.
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.