UA Science
Launch time is 9:03pm PDT/AZ, from Vandenberg Space Force Base, CA.

CatSat Launch on June 26, 2024

CatSat is a student-run project involving NASA’s Space Technology Mission Directorate, Freefall Aerospace, the University of Arizona, and Rincon Research Corporation in Tucson, Arizona.

Read more here!

Giant Magellan Telescope Enclosure Ready for Construction

The Giant Magellan Telescope (GMT) and IDOM today announced that the telescope’s enclosure, set to be one of the world’s largest astronomical facilities, passed its final design review and is now ready for construction in Chile. The review marks a major milestone for the telescope, which is now 40% under construction. This also marks an...

Native American representatives gather with UArizona leaders for third Tribal Leaders Summit

Tribal leaders from across the state gathered at the University of Arizona Monday to meet with campus leaders and discuss ways to strengthen partnerships between the university and tribal communities in Arizona.


CatSat's launch date approaches!

CatSat is atechnology demonstration of an inflatable antenna for high-speed communications.  The “Ah-ha” moment for the antenna technology came to the CatSat principal investigator when Chris Walker took a pause while making chocolate pudding and covered the pot with plastic wrap. Later he noticed an image of an overhanging light bulb was being created by reflections off the concave plastic wrap which had been pulled in by the cooling of air in the pot.

This observation eventually led to the Large Balloon Reflector, an inflatable technology  that creates large collecting  apertures that weigh a fraction of today’s deployable antennas. CatSat’s deployable antenna...

UArizona graduate student and team discover most distant supernovas ever found

Peering deeply into the cosmos, NASA's James Webb Space Telescope is giving scientists their first detailed glimpse of supernovas from a time when the universe was young.


Glimpses of a volcanic world: New LBT images of Jupiter's moon Io rival those from spacecraft

New images of Jupiter's volcano-studded moon Io, taken by the Large Binocular Telescope on Mount Graham in Arizona, offer the highest resolution of Io ever achieved with an Earth-based instrument. The observations were made possible by a new high-contrast optical imaging instrument, dubbed...

James Webb Space Telescope spots the two most distant galaxies ever seen at cosmic dawn

When Kevin Hainline saw the data on his screen, he jumped up from his desk, startled by what he saw. In January 2023, Hainline – an associate research professor in the University of Arizona Department of Astronomy and Steward Observatory – was the first person to ever lay eyes on the galaxies JADES GS-z14-0 and the slightly less distant GS-z14-1. At the time of their discovery, these galaxies were merely two candidates among the hundreds Hainline had discovered, each one requiring careful follow-up observation to help confirm their extreme distances. Months later, standing over his desk, he had data confirming that the international team of astronomers working on the James Webb Space...

Steward Observatory’s Buell Jannuzi wins UArizona’s Distinguished Head/Director’s Award

This week, Buell Jannuzi, Head of the Department of Astronomy and Director of Steward Observatory, receives University of Arizona’s Distinguished Head/Director’s Award, an honor that reflects his abilities as a leader to engender trust, foster collaboration, and recruit and retain a diverse community of high-achieving staff, students and faculty.

"We are extremely fortunate to have such a dedicated and effective leader for Steward Observatory and the Department of Astronomy,” said Regents’ Professor George Rieke. “In a limited-funding, highly-constrained environment he has, nevertheless, managed to extend and expand the ambition of the faculty and staff of the department and...

For the public
For Public

Public events include our Monday Night Lecture Series, world-reknowned Astronomy Camp and Mt Lemmon Sky Center.

For Students

A good place to start if you want to become an undergrad major or grad student, or need to find our schedule of classes.


For Scientists
For Scientists

Find telescopes and instruments, telescope time applications, staff and mountain contacts, and faculty and staff scientific interests.