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Small Bodies

PSI projects, people, and stories on topics including Asteroids, Comets, Dust, Centaurs, Trans-Neptunian Objects & more

Projects

Characterizing Primitive Asteroids

NASA Hubble Space Telescope General Observer Program-Cycle 30

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Principal Investigator

Amanda Hendrix

Project Team

Planetary Science Institute Faith Vilas

Understanding Asteroids by the Distribution of their Hydrated Minerals

NASA Solar System Observations Program

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Institutional PI

Matthew Richardson

Project Team

Amanda Sickafoose
External Partners
  • The Johns Hopkins University Applied Physics Laboratory

Using pit crater chains to probe regolith depth and development on asteroid 433 Eros

NASA Discovery Data Analysis Program

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Principal Investigator

James Richardson

Project Team

Dan Berman
Jordan Steckloff

See all projects

People

Alan Howard

Senior Scientist

Virginia

Amanda Hendrix

Director and Chief Executive Officer

Arizona

Amanda Sickafoose

Senior Scientist

South Africa

Amara Graps

Senior Scientist

Latvia

Amy Mlinar

Senior Scientist

Serbia

See all people

Stories & News

PSI’s international Belton Symposium kicks off in Tucson

November 8, 2025
Kathryn Volk
Beatrice Mueller
Mark Sykes

PSI reflects on New Horizons

July 17, 2025
Carly Howett
Kirby Runyon
Susan Benecchi

Object discovered orbiting Sun in sync with Neptune

July 15, 2025
Kathryn Volk

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Planetary Science Institute

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

Address: 1700 East Fort Lowell, Suite 106 Tucson, AZ 85719-2395

Contact: Tel: 520-622-6300 • Fax: 520-622-8060

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