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The painting on the left is an artist’s conception of a plume eruption on Saturn’s moon Enceladus. The image on the right is a photo of two researchers in the Utah desert collecting effluent from the ...

The Planetary Science Institute is pleased to have recently welcomed four new members to its Board of Trustees. “We are thrilled to welcome our new board members,” said PSI Director and CEO Amanda ...

Material melted during lunar impact flowed and then froze into long tongues of material that have been cratered by much smaller impactors over time. Credit: NASA/GSFC/Arizona State University This ...

A composite view of Europa’s spider-like Manannán Crater (right), taken by NASA’s Galileo spacecraft in May 1998. Credit: NASA/JPL/University of Arizona Dec. 1, 2025, TUCSON, Ariz. – From Europa to ...

An artist's concept of NASA’s Mars Reconnaissance Orbiter, which has been orbiting the Red Planet since 2006. The antenna is part of SHARAD, a radar that peers below the Martian surface. Credit: ...

A collage of moons from the outer Solar System suspected of having a subsurface ocean. New research addresses the mystery as to why their surfaces can be so varied. Credit: NASA On moons in the outer ...

New research suggests that Ariel, a moon of Uranus, might have once harbored an ocean about 100 miles (170km) deep. Credit: NASA/JPL-Caltech/PSI/Mikayla Kelley/Peter ...

Planetary Science Institute Senior Scientist JA Grier was named the next vice chair of the Division for Planetary Science (DPS) of the American Astronomical Society (AAS). Grier’s elected service ...

From Sept. 7-12, PSI scientists gathered in Helsinki, Finland with planetary science colleagues for a joint science meeting between the Europlanet Science Congress (EPSC) and the U.S.-based Division ...

Mars is more than a dusty, red planet. Some parts of its surface can resemble the folds and ridges of the human brain or ocean corals. Scientists have dubbed such Martian surface features ‘brain coral ...

July 24, 2025, TUCSON, Ariz. – On the slopes of Martian mountains and craters clings what appears to be flowing honey, coated in dust and frozen in time. In reality, these features are incredibly slow ...