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The University of Arizona: Worlds of Words Center Exhibit

Worlds of Words Center 1430 E. Second St., Tucson

Gravitate into Galaxy Slam week with big book energy. Before they were shot callers, scientists and athletes were kids with their heads in the clouds. Visit Worlds of Words during U of A’s Galaxy Slam week to browse global books to ignite your imagination about space and space travel. The display is complemented by “stellar”...

Free

I ❤️ Pluto Festival 2026: Pluto’s Birthday Bash

Lowell Observatory 1400 W. Mars Hill Rd., Flagstaff

Celebrate our favorite planet’s discovery day with us! Enjoy a special exhibit hall with birthday cake, vendors, crafts, and more!     Part of I ❤️ Pluto Festival 2026 , an event celebrating the 96th anniversary of Pluto’s discovery on February 18, 1930. It is organized by Lowell Observatory.

Free with Admission

The University of Arizona: Richard F. Caris Mirror Lab Tour

The University of Arizona Steward Observatory 933 N. Cherry Ave., Tucson

This 90-minute tour provides a unique opportunity to learn how innovative engineering and optical technology melds with manufacturing techniques to produce the largest and most advanced giant (8.4 meters /...

$20 – $25

I ❤️ Pluto Festival 2026: Special Activities at Lowell Observatory

Lowell Observatory 1400 W. Mars Hill Rd., Flagstaff

3pm – 7pm | Great Planetary Hall Beer Garden with Mother Road Brewing 4pm – 9pm (Every hour on the hour) | Giovale Open Deck Observatory Talks about Pluto and other icy bodies in our Solar System 4pm – 8pm| Giovale Open Deck Observatory Meet an Astronomer 4:30pm-5:30pm | Starts in Origins Gallery Special Pluto...

Free with Admission