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 began on Sept. 7 at the … Read More
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 for Planetary Sciences (DPS). 2011 marked the … Read More
The winds of Mars sculpt and shape sand into wave-like dunes. Much of what is known about how sand dunes move around the surface is based on images taken by the HiRISE camera onboard the … Read More
The MESSENGER mission to Mercury discovered the unexpected presence of volatile elements – such as sulfur, sodium, chloride and even water hidden in permanently shadowed regions in craters near the poles. Volatiles are those materials … Read More
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 … Read More
Aug. 15, 2025, TUCSON, Ariz. – Planetary Science Institute Senior Scientist Faith Vilas was awarded the 2025 Gerard P. Kuiper Prize by the Division for Planetary Sciences of the American Astronomical Society. This prize recognizes … Read More
At the 2025 Annual Retreat banquet on Tuesday, July 29, Planetary Science Institute scientists, staff and their families and friends gathered to celebrate the former director Mark Sykes‘ 21 years at the helm. They shared … Read More
Aug. 5, 2025, TUCSON, Ariz. – Researchers have studied a new mineral on Mars, called ferric hydroxysulfate, that could provide insight into how heat, water and chemical reactions shape the planet’s surface, according to a new … Read More
On Sunday July 27, about 100 Planetary Science Institute members gathered at the Hacienda Del Sol Guest Ranch Resort in Tucson, Ariz. for the 2025 retreat, a multi-day gathering for reconnection, collaboration, strategic planning and … Read More
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-moving … Read More
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