Museum
Lowell Observatory
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Lowell Observatory, founded in 1894, is a historic astronomical research facility in Flagstaff, Arizona. It gained worldwide fame when astronomer Clyde Tombaugh discovered Pluto here in 1930. Visitors can explore the campus, view exhibits on the discovery, and peer through historic telescopes during daytime tours. At night, the observatory opens its domes for public stargazing, offering views of planets, stars, and galaxies through modern and vintage instruments. The high-altitude location provides clear, dark skies, making it a premier destination for astronomy enthusiasts.
Don't miss
- See the original Pluto Discovery Telescope used by Clyde Tombaugh in 1930.
- Attend a nighttime observing session with expert-led telescope viewing.
- Explore the historic Clark Telescope, a 24-inch refractor from 1896.
Tickets & tours
Ways to visit Lowell Observatory
You can usually visit on your own. A tour is worth it for transport, a guide, or combining nearby sights into one day.
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