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 ...

A study recently published in the journal Nature Astronomy upends conventional wisdom regarding the formation and stability of pairs of orbiting objects in the Kuiper Belt beyond the planet Neptune.

The universe is our laboratory: PSI scientists are pushing the boundaries of knowledge, exploring worlds near and far, from Earth and beyond. PSI began in the late 1960s, with a group of talented PhD ...

Nov. 1, 2024, TUCSON, Ariz. – On a cold, ancient Mars, rivers flowed and a lake the size of the Mediterranean Sea swelled under the protection of thick ice ceilings, according to new research ...

Non PSI Personnel: Jeffrey Andrews-Hanna (University of Arizona), Yuan Lian (Aeolis Research), Claire Newman (Aeolis Research) ...

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 ...

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

Barringer Crater, also called Meteor Crater, is located in the United States of America (35º 2′ N, 111º 1′ W) in northern Arizona, about 35 miles (55 km) east of the city of Flagstaff. The crater is ...

The Moon has fascinated and puzzled humanity for millennia. People have gazed at the Moon, watching it wax and wane in the sky with the passage of each month, contemplating its contrasting patterns of ...

The photo below is of another old shaft that was used for drilling in the early 1900’s. It is easily recognizable by the surrounding light-colored material that was excavated from the shaft. This is ...

This is the spot 39 million years ago where an asteroid or comet hit Devon Island . What do you notice about the rocks at this location? Recall how the rocks at Thomas Payne Canyon (outside of the ...

Location: At “Perserverance Hill”, approximately 1 kilometer northwest of the peak in the central uplift ...