Start by typing a topic, instrument, mission, or facility. PSI is a nonprofit 501(c)(3) corporation, and an Equal Opportunity Employer, including disability/veterans.

PSI is a nonprofit 501(c)(3) corporation, and an Equal Opportunity Employer, including disability/veterans.

Illustration of the uncertainty of Earth's orbit 56 million years ago due to a potential past passage of the Sun-like star HD7977 2.8 million years ago. Each point's distance from the center ...

Experience the intersection of art and planetary science through the remarkable works of renowned artist, planetary scientist, and Planetary Science Institute co-founder William K. Hartmann and other ...

Your support makes a difference! As a Planetary Partner, YOU will enable our Scientists and Educators to advance world-class Solar System research and grassroots ...

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 ...

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 ...

As the Artemis II crew came close to passing behind the Moon and experiencing a planned loss of signal, they captured this image of a crescent Earth. Credit: NASA The participating scientists will ...

Dec. 18, 2024, TUCSON, Ariz. – The Planetary Science Institute has selected University of Arizona graduate student Namya Baijal and Indian Institute of Technology Kanpur doctoral candidate Mishal K T ...

Lava tubes are high priority targets for in situ exploration of Mars, with the potential to provide access to subsurface cavities that could facilitate scientific studies of the Martian subsurface as ...

Oct. 28, 2024, TUCSON, Ariz. – The Moon and Mars are pocked with giant impact craters acquired very long ago, while there appears to be a dearth of them on Earth and Venus. Time may have healed many ...

Senior Scientist Daniel Berman led a team of other PSI scientists in producing a new U.S. Geological Survey Investigations map of Mars. The map shows details of the source region of Shalbatana Vallis, ...