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Learn about the Discovery Channel Telescope
Visitors touring the Clark Telescope

Tour of the Clark Telescope

PROGRAMMING ALERT: The Clark Telescope is closed for renovation through mid-2015. Daytime Mars Tours will still go inside the dome when possible. In the evening, we will use the recently renovated 16-inch McAllister Telescope as our primary telescope for public viewing.

New Traveling Exhibit - Black Holes: Space Warps and Time Twists
January 18 - May 4, 2014.

This exhibit was developed by educators and scientists at the Harvard-Smithsonian Center for Astrophysics (CfA). Its interactive stations address a number of questions, such as: What is a black hole? Where are black holes? How do we find black holes if they are really black? What would happen if you fell into a black hole?

One popular exhibit station allows visitors to experience their own black hole adventure. Using one of three "excursion pods," they will embark on a fantasy "adventure vacation" to the black hole at the center of our galaxy. As they make their way toward this "deep space dive," visitors explore the phenomena around the black hole, including warped space, the slowing of time, and the dangerous magnetic fields and radiation that could leave them stranded on their cosmic adventure.

As they travel through the exhibit, visitors carry their own bar-coded Explorer's Card, which they can use to collect discoveries and to generate a personalized website that only they can access. Once visitors return home, their journal becomes a personal portal to further black hole exploration and a platform for sharing their Black Holes experience with friends and family.

Lunar Eclipse presentation
April 14, 2014

At 6 and 8 p.m., hear a program about tonight's lunar eclipse. Note that we will not view the eclipse since it doesn't begin until 11 p.m.

Lyrid Meteor Shower
April 22, 2014

From 6 to 9:30 p.m., enjoy activities focused on meteor showers.


 Visitor Info


Covers day and evening programs; reservations not needed.

Adults: $12

Seniors, AAA, college students: $11

Ages 5–17: $6

Under 5: free

Members: Free

Groups of 15 or more are eligible for a group discount; to qualify, you must make reservations at least 3 weeks in advance. Contact Jamie Money by email or phone at 928-856-9484.


Mon - Sat
9:00 a.m. - 9:30 p.m.

9:00 a.m. - 5:00 p.m.

Click here to see seasonal hours.

Arizona observes Mountain Standard Time year round.
Click here
for the current time in Flagstaff, AZ.

Special Closures in 2014

Nov 27 Observatory closed all day

Sep 30 Giclas Lecture Hall closed 5-10 p.m.

Dec 24 Observatory closed all day

Dec 25 Observatory closed all day

Jan 1, 2015 Observatory closed all day