BBC: Archaeologists have revived the debate over whether a spectacular Bronze Age disc from Germany is one of the earliest known calendars.The Nebra disc is emblazoned with symbols of the Sun, Moon and stars and said by some to be 3,600 years old.Writing in the journal Antiquity, a team casts doubt on the idea the disc was used by ancient astronomers as a precision tool for observing the sky.They instead argue that the disc was used for shamanistic rituals.
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.