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Your Support Can Make a Difference ~ Thank you!

Support for the Planetary Science Institute (PSI) is an investment in scientific discovery as we expand our understanding of the solar system. We also work to advance Science, Technology, Engineering and Math (STEM) education and science literacy.

The following are a few key projects PSI is currently undertaking:

The Michael J.S. Belton and Anna Don Fund was established by Michael J.S. Belton and Anna Don to support biennial symposiums with a focus on the origins, physical structure and composition of comet nuclei. Dr. Belton was a leader of the planetary science community and made fundamental contributions to cometary science. He was also a member of PSI’s Board of Trustees. His passion for science lives on through the support of this fund.
to the Michael J.S. Belton and Anna Don Fund

The Betty Pierazzo Memorial Fund honors PSI Senior Scientist Betty Pierazzo, an internationally noted planetary impact scientist and educator. This fund supports the Pierazzo International Student Travel Award, which is given annually to an American graduate student to attend a planetary meeting outside the US and to a non-US graduate student to attend a planetary meeting within the US, promoting international collaborations and appreciation. 

to the Betty Pierazzo Memorial Fund

Education and Public Outreach.  Turn on the television, open a newspaper or a news magazine and you will read about the need to improve STEM education. We are doing our part to make a difference in the Tucson and Southern Arizona area, and extending our programs to other parts of the United States. When you hear someone saying “every gift makes a difference,” that is so very true for our education programs.

to Education and Public Outreach

The Annual Fund provides important support for institutional infrastructure, allowing us to smoothly and efficiently provide the best possible environment for our scientists and educators. 

to the Annual Fund




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PSI, a Nonprofit Corporation 501(c)(3), and an Equal Opportunity/M/F/Vet/Disabled/Affirmative Action Employer.
Corporate Headquarters: 1700 East Fort Lowell, Suite 106 * Tucson, AZ 85719-2395 * 520-622-6300 * FAX: 520-622-8060
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