1400 West Mars Hill Rd

Flagstaff AZ, 86001


Temporarily closed



Effective at 10pm MST on January 7, Lowell Observatory is temporarily closing our on-site visitor programs due to the increasing surge of COVID-19 cases in our community. Our doors will remain closed until the surge of local cases has significantly diminished. 

It is with heavy hearts that we return to a full public closure, but we eagerly look forward to re-opening our doors to all of you once the level of community spread permits it.

Follow us on social media for updates to our status, and to engage in our exciting digital experiences.

General Admission

Get all-day access to 127 years of astronomical discovery at Lowell Observatory.

Explore the Observatory

Plan Your Visit

The Giovale Open Deck Observatory features six advanced telescopes that collectively give you a viewing experience that goes far beyond seeing faint smudges of light.

Upcoming Events

Virtual Event

February 12 @ 7:00 pm

I♥Pluto Festival 2022 | Imagining Pluto Before the Flyby

Virtual Event

February 13 @ 7:00 pm

I♥Pluto Festival 2022 | The Moon, Mars and Beyond

Virtual Event

February 15 @ 8:00 am

I♥Pluto Festival 2022 | Astronomical Time-lapse Imaging: From seconds to Centuries

Virtual Event

February 17 @ 8:00 am

I♥Pluto Festival 2022 | Searching for Signs of Past Life on Mars

On-Site Event

February 18 @ 5:00 pm

A Night of Discovery at the Orpheum Theater

Virtual Event

February 19 @ 8:00 am

I♥Pluto Festival 2022 | Searching for Planets Around Other Stars

Virtual Event

February 20 @ 8:00 am

I♥Pluto Festival 2022 | The Rivers and Seas of Titan

Virtual Event

February 21 @ 7:00 pm

I♥Pluto Festival 2022 | Lesson Learned from Observing Earth’s Cryosphere from Satellites

Worlds Revealed

Lowell Observatory has been making history beneath the awe-inspiring dark skies of Flagstaff, Arizona, for over 125 years. Experience the past, present, and future of astronomy firsthand.

Walk in the footsteps of prolific figures such as our founder Percival Lowell, Pluto discoverer Clyde Tombaugh, the astronauts of the Apollo Program, and numerous others. History is made every day by our brilliant team of researchers, and discovery awaits you, too. Look through our historic and cutting-edge telescopes yourself to see our universe like you’ve never seen it before.

Plan Your Visit

Step back in time

Percival Lowell at the Historic Clark Refractor Telescope.

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