Nature News: A NASA test balloon coasting in stratospheric breezes around Antarctica broke the duration record for balloons this week. It has surpassed a record set in 2005, when a balloon carried a cosmic-ray experiment aloft for almost 42 days.
“It’s been a superb flight,” says David Pierce, chief of NASA’s balloon programm at Goddard Space Flight Center’s Wallops facility in Virginia. “We’re proving this is a viable platform.” Balloon flights are a lot cheaper than satellites for conducting experiments, but the short time they remain aloft has been a drawback to long-term cosmic-ray and high- altitude atmospheric experiments.
This new balloon design suggests that a $50,000 balloon could replace a million-dollar spacecraft for short-to-medium-term research experiments.
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.