Nature: A review and prioritization of NASA’s planetary science missions is expected to be released tomorrow. Two of the missions that were thought to be under threat of cancellation appear to have been granted two more years of operation: the Martian rover Opportunity and the Lunar Reconnaissance Orbiter (LRO). Opportunity, which has been suffering from a variety of mechanical problems, has been operating for 10 years and has traveled more than 40 km on the surface of Mars. LRO completed its primary task of mapping potential landing spots for astronauts in 2010 and has been imaging recent meteorite impacts. Also under review, but not considered likely to have their funding cut, are the Martian rover Curiosity and the Saturn-orbiting Cassini. Still unknown are the fates of the Mars Reconnaissance Orbiter, the Mars Odyssey orbiter, and an instrument onboard the European Space Agency’s Mars Express.
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.