Hubble Circle

The Hubble Circle is a group of philanthropic individuals who support the University's goal to be a leader in observational astronomy with gifts of $1 million or more.

Edwin Hubble (University of Chicago, AB in Physics 1910; PhD in Astronomy 1917) laid the foundation for modern observational cosmology with his discovery that the universe extends beyond the Milky Way and that it is expanding at a growing rate. It is in his spirit that the University of Chicago is advancing its stature as a leading center of observational astronomy by joining the Magellan Consortium and becoming a founding partner for the Giant Magellan Telescope (GMT).

Today's cutting-edge research requires access to large, ground-based optical and infrared telescopes. The twin 6.5 meter Magellan Telescopes at Las Campanas in the Chilean Andes are widely acknowledged to produce the best image quality currently available from a ground-based telescope, and the GMT will be the world's largest telescope when it begins operations in 2021. By guaranteeing access to observatories that will stand at the forefront of astronomical investigation in the 21st century, Chicago will lead the next wave of breakthrough discoveries that will change the way we think about the universe and our place in it.

Giant Magellan Telescope
Giant Magellan Telescope

To fully realize this vision, the University is recruiting members to the Hubble Circle. The support and involvement of these twelve select visionaries will prove integral to enabling Chicago's world-renowned cosmologists to harness the new generation of optical telescopes in their quest to find answers to fundamental questions about the early universe as well as the nature of dark matter and dark energy.

Hubble Circle members will receive:

  • Sloan Digital Sky Survey Plate
  • Invitation to annual Astro Immersion events
  • Annual updates from the Astronomy & Astrophysics Chair and Kavli Director
  • Invitations to travel to observational facilities in the United States, Chile and elsewhere
  • Pre-publication notice of important discoveries

For more information on the Hubble Circle, contact: Erin Biebuyck,

Hubble Circle Members

  • Donald E. Butterfield, AB '53 and Ken Ishiwata
  • Alec Litowitz, JD '93, MBA '93
  • Min Hyo Mrotz and Michael Long, AB '75
  • John McGrain
  • John and Leslie McQuown
  • Susan S. Pritzker and Nicholas J. Pritzker, JD '75
  • Dana Puschell and Jeffery Puschell, AB '75
  • Reuben Sandler, SM '58, PhD '61 
  • Thomas and Sharon Zimmerman