A view of Mercury’s north polar chaotic terrain (Borealis Chaos) and the Raditladi and Eminescu craters where evidence of possible glaciers has been identified. Credit: NASA. Scientists from the ...

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 ...

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 ...

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Top: Black and white image of the Moon from Moon Mineralogy Mapper data. Bottom: Map of water on the Moon. The different colors represent different shapes to the water absorption and correlate with ...

NOTICE: This is a statement by Planetary Science Institute CEO Mark V. Sykes, and reflects the values and principles that guide the daily management of and planning for this Institute under his ...

A recent large survey of low-albedo asteroid spectra in the 3-μm region show a range of hydrated compositions, with one large group similar to the CM chondrites and a second large group showing ...

The universe is our laboratory: PSI scientists are pushing the boundaries of knowledge, exploring worlds near and far, from Earth and beyond. PSI is a vibrant community dedicated to excellence and ...

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 ...

Let’s do some math. As a target, you need to determine the cross-section of the Moon (target Moon is a disk). The radius of the Moon is 1,737 km, so its cross-sectional area is 9.5 X 10 6 km 2. The ...

The Planetary Science Institute hosts MARSTHERM (marstherm.psi.edu), a public interface to numerical thermal modeling and thermal-inertia derivation codes ...

This image shows eroded channels near the Martian poles filled with bright frozen carbon dioxide, in contrast to the muted red of the underlying ground. In the summer ...