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Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Dome of the 16-inch McAllister Telescope at Lowell Observatory in Flagstaff, Arizona

Dome of the 16-inch McAllister Telescope at Lowell Observatory in Flag...

Built in 1963 and originally owned by Northwestern University and used for public viewing, originally in Dearborn Observatory in Michigan, the scope was donated to Lowell in 1995. Established in 1894, Lowell Ob... More

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a small palace, chateau, villa, residential historic building, free to use, no copyright restrictions image.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain scan of an architecture diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Historic Route 66 - Lowell Observatory

Historic Route 66 - Lowell Observatory

The original finding aid described this photograph as: Original Caption: Framed by sun dappled leaves and shadows, the Lowell Observatory provides scenic beauty and scientific wonder. Location: Location: Ariz... More

Nighttime Temperatures on Ganymede - NASA/JPL Galileo Program Images

Nighttime Temperatures on Ganymede - NASA/JPL Galileo Program Images

Nighttime Temperatures on Ganymede NASA/JPL/Lowell Observatory

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain scan of architectural drawing, architecture, free to use, no copyright restrictions image - Picryl description

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain scan of an architecture diagram, architectural drawing, building plan, or design, free to use, no copyright restrictions - Picryl description.

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

The Clark Telescope, built in 1896, at Lowell Observatory in Flagstaff, Arizona

The Clark Telescope, built in 1896, at Lowell Observatory in Flagstaff...

Commissioned in 1895 by the obsevatory's founder, Percival Lowell, the firm of Alvan Clark & Sons of Cambridgeport, Massachusetts, built the 24-inch (61-centimetre) aperture f/11.3 refractor telescope. Since it... More

The Slipher Building at Lowell Observatory in Flagstaff, Arizona

The Slipher Building at Lowell Observatory in Flagstaff, Arizona

The rotunda and first floor, built in 1916, house the personal library of the observatory's founder, Percival Lowell, as well as other historical exhibits including the "blink-comparator" used by astronomer Cly... More

An old water tank and shed, used to store a large soda-acid fire extinguisher at Lowell Observatory in Flagstaff, Arizona

An old water tank and shed, used to store a large soda-acid fire extin...

Established in 1894, Lowell is among the oldest astronomical observatories in the United States. In 2011, it was named one of "The World's 100 Most Important Places" by Time magazine. Title, date and keywords b... More

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain photograph - historical image of Arizona, United States, free to use, no copyright restrictions image - Picryl description

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of an architectural element, dome, cathedral, classical architecture, free to use, no copyright restrictions.

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

The Lawrence Lowell Telescope, built in 1928-29 at Lowell Observatory in Flagstaff, Arizona

The Lawrence Lowell Telescope, built in 1928-29 at Lowell Observatory ...

The 13-inch astrograph was used by Clyde Tombaugh to discover Pluto, the planet (or dwarf planet, depending on one's position in an ongoing debate). Established in 1894, Lowell is among the oldest astronomical ... More

Lowell Observatory, Mausoleum, Flagstaff, Coconino County, AZ

Lowell Observatory, Mausoleum, Flagstaff, Coconino County, AZ

Survey number: HABS AZ-206-D National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a small palace, chateau, villa, residential historic building, free to use, no copyright restrictions image.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain photograph - historical image of Arizona, United States, free to use, no copyright restrictions image - Picryl description

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain photograph of a house, cottage, free to use, no copyright restrictions image - Picryl description

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of park architecture, palace, chateau, open space, 18th, and 19th-century architecture, free to use, no copyright restrictions.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a historic place interior, salon, hall lobby, living room, 18th-19th century architecture, free to use, no copyright restrictions.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain scan of architectural drawing, architecture, free to use, no copyright restrictions image - Picryl description

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Dome of the Lawrence Lowell Telescope, built in 1928-29 at Lowell Observatory in Flagstaff, Arizona

Dome of the Lawrence Lowell Telescope, built in 1928-29 at Lowell Obse...

The 13-inch astrograph was used by Clyde Tombaugh to discover Pluto, the planet (or dwarf planet, depending on one's position in an ongoing debate). Established in 1894, Lowell is among the oldest astronomical ... More

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a basement, underground, lobby, free to use, no copyright restrictions.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain scan of architectural drawing, architecture, free to use, no copyright restrictions image - Picryl description

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, Coconino County, AZ

Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, Coconino Coun...

Significance: Founded in 1894, by Bostonian Percival Lowell in Flagstaff, it is an important landmark in the history of astronomy. The observatory's unique historic structures stand as examples of changing tech... More

Lowell Observatory, Water Tank, Flagstaff, Coconino County, AZ

Lowell Observatory, Water Tank, Flagstaff, Coconino County, AZ

Public domain photograph of a tank, military armed vehicle, construction vehicle, free to use, no copyright restrictions image - Picryl description

Daytime Temperatures on Europa, NASA / JPL Europa Image

Daytime Temperatures on Europa, NASA / JPL Europa Image

Daytime Temperatures on Europa NASA/JPL/Lowell Observatory

Pre-Dawn Temperatures on Ganymede

Pre-Dawn Temperatures on Ganymede

Pre-Dawn Temperatures on Ganymede NASA/JPL/Lowell Observatory

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of an architectural element, dome, cathedral, classical architecture, free to use, no copyright restrictions.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of an architectural element, dome, cathedral, classical architecture, free to use, no copyright restrictions.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain scan of an architecture diagram, architectural drawing, building plan, or design, free to use, no copyright restrictions - Picryl description.

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, Coconino County, AZ

Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, Coconino Coun...

Significance: Founded in 1894, by Bostonian Percival Lowell in Flagstaff, it is an important landmark in the history of astronomy. The observatory's unique historic structures stand as examples of changing tech... More

Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, Coconino County, AZ

Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, Coconino Coun...

Significance: Founded in 1894, by Bostonian Percival Lowell in Flagstaff, it is an important landmark in the history of astronomy. The observatory's unique historic structures stand as examples of changing tech... More

A photographic plate produced here at Lowell Observatory in Flagstaff, Arizona, during various stages of a search for a "Planet X" beyond Nepture that led to Clyde Tombaugh's discovery of Pluto in 1930

A photographic plate produced here at Lowell Observatory in Flagstaff,...

Established in 1894, Lowell is among the oldest astronomical observatories in the United States. In 2011, it was named one of "The World's 100 Most Important Places" by Time magazine. Title, date and keywords b... More

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Lowell Observatory, Lodge, Flagstaff, Coconino County, AZ

Lowell Observatory, Lodge, Flagstaff, Coconino County, AZ

Survey number: HABS AZ-206-F National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain photograph of window, architectural element, free to use, no copyright restrictions image - Picryl description

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain photograph - historical image of Arizona, United States, free to use, no copyright restrictions image - Picryl description

The 16-inch McAllister Telescope at Lowell Observatory in Flagstaff, Arizona

The 16-inch McAllister Telescope at Lowell Observatory in Flagstaff, A...

Built in 1963 and originally owned by Northwestern University and used for public viewing, originally in Dearborn \rObservatory in Michigan, the scope was donated to Lowell in 1995. Established in 1894, Lowell ... More

This is a view from the Lowell Observatory, high atop a hill outside Flagstaff, Arizona. It it obviously not the Milky Way or the moon, but the observatory's surroundings and distant Flagstaff " as seen by a comparatively tiny photographer's lens

This is a view from the Lowell Observatory, high atop a hill outside F...

Title, date and keywords based on information provided by the photographer. Gift; Barbara Barrett; 2018; (DLC/PP-2018:112) Forms part of Carol M. Highsmith's America Project in the Carol M. Highsmith Archive. C... More

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Bust of astronomer Clyde Tombaugh at Lowell Observatory in Flagstaff, Arizona

Bust of astronomer Clyde Tombaugh at Lowell Observatory in Flagstaff, ...

Title, date and keywords based on information provided by the photographer. Tombaugh discovered Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt. At the time... More

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Entrance doors to Percival Lowell's mausoleum, erected in 1923, on the grounds of Lowell Observatory in Flagstaff, Arizona

Entrance doors to Percival Lowell's mausoleum, erected in 1923, on the...

Percival Lowell was an American businessman, author, mathematician, and astronomer who fueled speculation that there were canals on Mars. He founded the observatory, established in 1894, that is among the oldes... More

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain photograph - historical image of Arizona, United States, free to use, no copyright restrictions image - Picryl description

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Public domain scan of an architecture diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

A photographic plate produced here at Lowell Observatory in Flagstaff, Arizona, during various stages of a search for a "Planet X" beyond Nepture that led to Clyde Tombaugh's discovery of Plut in 1930

A photographic plate produced here at Lowell Observatory in Flagstaff,...

Established in 1894, Lowell is among the oldest astronomical observatories in the United States. In 2011, it was named one of "The World's 100 Most Important Places" by Time magazine. Title, date and keywords b... More

Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, Coconino County, AZ

Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, Coconino Coun...

Significance: Founded in 1894, by Bostonian Percival Lowell in Flagstaff, it is an important landmark in the history of astronomy. The observatory's unique historic structures stand as examples of changing tech... More

Dome of the Clark Telescope, built in 1896 at Lowell Observatory in Flagstaff, Arizona

Dome of the Clark Telescope, built in 1896 at Lowell Observatory in Fl...

Commissioned in 1895 by the obsevatory's founder, Percival Lowell, the firm of Alvan Clark & Sons of Cambridgeport, Massachusetts, built the 24-inch (61-centimetre) aperture f/11.3 refractor telescope. Since it... More

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a small palace, chateau, villa, residential historic building, free to use, no copyright restrictions image.

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Slipher Building, 1400 West Mars Road, Flagstaff, ...

Picryl description: Public domain image of a residential building, house, 19th-20th century architecture, free to use, no copyright restrictions.

Inscription on Percival Lowell's mausoleum, erected in 1923, on the grounds of Lowell Observatory in Flagstaff, Arizona

Inscription on Percival Lowell's mausoleum, erected in 1923, on the gr...

Percival Lowell was an American businessman, author, mathematician, and astronomer who fueled speculation that there were canals on Mars. He founded the observatory, established in 1894, that is among the oldes... More

The "Plate Vault" at Lowell Observatory in Flagstaff, Arizona, containing mostly photographic plates taken at Lowell during various stages of a search for a "Planet X" beyond Nepture that led to Clyde Tombaugh's discoveryPluto in 1930

The "Plate Vault" at Lowell Observatory in Flagstaff, Arizona, contain...

Established in 1894, Lowell is among the oldest astronomical observatories in the United States. In 2011, it was named one of "The World's 100 Most Important Places" by Time magazine. Title, date and keywords b... More

Dome of the Clark Telescope, built in 1896 at Lowell Observatory in Flagstaff, Arizona

Dome of the Clark Telescope, built in 1896 at Lowell Observatory in Fl...

Commissioned in 1895 by the obsevatory's founder, Percival Lowell, the firm of Alvan Clark & Sons of Cambridgeport, Massachusetts, built the 24-inch (61-centimetre) aperture f/11.3 refractor telescope. Since it... More

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Pluto Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-C National Register of Historic Places NRIS Number: 66000172

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconino County, AZ

Lowell Observatory, Clark Dome, 1400 West Mars Road, Flagstaff, Coconi...

Survey number: HABS AZ-206-B National Register of Historic Places NRIS Number: 66000172

The Clark Telescope, built in 1896, at Lowell Observatory in Flagstaff, Arizona

The Clark Telescope, built in 1896, at Lowell Observatory in Flagstaff...

Commissioned in 1895 by the obsevatory's founder, Percival Lowell, the firm of Alvan Clark & Sons of Cambridgeport, Massachusetts, built the 24-inch (61-centimetre) aperture f/11.3 refractor telescope. Since it... More

Lowell Observatory, Mausoleum, Flagstaff, Coconino County, AZ

Lowell Observatory, Mausoleum, Flagstaff, Coconino County, AZ

Survey number: HABS AZ-206-D National Register of Historic Places NRIS Number: 66000172