Story of Pluto Tour


45 minutes


12pm - 12:45pm
3pm - 3:15pm


Included with General Admission

Meet your educator in the iconic Rotunda Building to learn about the groundbreaking discovery that put Lowell Observatory on the map.

You’ll learn about Clyde Tombaugh, the tenacious 23-year-old Kansanite who discovered Pluto in 1930, as well as the arduous process that led to his historic discovery. Is Pluto really not a planet? Find out on this historic tour! 

*Due to the small size of the Pluto Dome, this tour is limited to 30 people.

COVID-19 and General Admission

Test negative* for COVID-19 within 72 hours of visit.
(Ages 12+)
*Lab tests only.

Vaccination accepted in lieu of negative test.
(Ages 12+)

Young children wear masks when indoors.
(Ages 2-11)

Negative test not required for young children.
(Ages 2-11)

Phase 3A

General Admission is back, with new protocols to keep guests and staff safe from COVID-19. We will move to Phase 3B—unrestricted General Admission—as soon as the level of community spread permits it.

See our reopening plan.