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

The image on the left shows the difference between shocked basalt with red specs of iron alteration, in which bedrock basalt is the precursor, and lighter grey shocked soil on the bottom right of the ...

IoIO, pronounced eye-oh eye-oh, a small telescope with mighty science dreams as illustrated in a new comic book created by a team from the Planetary Science Institute. Credit: PSI/Alexis Lund ...

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 ...

A child looking up close at a chondrite (rocky) meteorite with a magnifying glass at the Leman Academy Math & Science Night in Tucson, Ariz. Credit: Larry Lebofsky Our Solar System is really good at ...

Candice Hansen-Koharcheck, a Planetary Science Institute senior scientist since 2010, died on April 11 after a valiant three-year battle with cancer. Her career spanned nearly 50 years, during which ...

Yellowballs, circled, are spherical star-forming regions that appear yellow in infrared images and are primarily associated with intermediate-mass stars. Credit: NASA/JPL-Caltech/The College of ...

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 ...

On Friday, Dec. 12, the Planetary Science Institute celebrated the end of the year with the annual holiday party! Office Manager Kimberly Foote transformed the west wing conference room and kitchen ...

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: ...