Sept. 16, 2024, Tucson, Ariz. – A new analysis of maps of the near and far sides of the Moon shows that there are multiple sources of water and hydroxyl in the sunlit rocks and soils, including ...

The Planetary Science Institute (PSI) proudly announces the Betty Pierazzo International Student Travel Award, in honor of our late Senior Scientist. This award is designed to inspire graduate ...

Scientists from the Planetary Science Institute have uncovered evidence of potential salt glaciers on Mercury, opening a new frontier in astrobiology by revealing a volatile environment that might ...

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 ...

Feb. 14, 2024, Tucson, Ariz. – Stars that pass by our Solar System have altered the long-term orbital evolution of planets, including Earth, and by extension modified our climate. “Perturbations – a ...

PSI is a nonprofit 501(c)(3) corporation, and an Affirmative Action/Equal Opportunity Employer, including disability/veterans. See employment opportunities at https ...

A mysterious object discovered in the main asteroid belt in 2021 was determined to be a main-belt comet by Planetary Science Institute Senior Scientist Henry Hsieh, Scott Sheppard of the Carnegie ...

April 15, 2024, Tucson, Ariz. – Saturn’s moon Mimas could have grown a huge underground ocean as its orbital eccentricity decreased to its present value and caused its icy shell to melt and thin. “In ...

Mishal K T was awarded the 2025 Pierazzo International Student Travel Award at the Lunar and Planetary Science Conference at The Woodlands, Texas, along with a check for $2,000 from PSI Director and ...

Planetary Science Institute scientists have converged in the lab, trying to decipher the mineral composition of dust. Not just any dust, but rather a simulated sample of Mercury’s surface, created as ...

Non PSI Personnel: Bradley Jolliff (Co-Investigator, Washington University), Samuel Lawrence (Co-Investigator, NASA Johnson Space Center) PSI is a nonprofit 501(c)(3 ...

Explore Planetary Science FAQs and resources curated by our scientists. Delve into topics like impact cratering, lunar phases, and citizen science contributions to space research. Quench your ...