Browse Items (71 total)

NASA/JHUAPL/SwRI, Pluto, 2015-07-14

NASA’s New Horizons spacecraft captured this high-resolution enhanced color view of Pluto on July 14, 2015. The image combines blue, red and infrared…

Tags: New Horizons, Pluto

Telegram of a Name Suggestion for Planet X by Venetia Burney, Burney, Venetia, 1930

Following the discovery of a new planet in March of 1930, people across the world sent letters and telegrams to Lowell Observatory with name…

Telegram from Roger L. Putnam Concerning Orbital Computations for Planet X, Putnam, Roger L, 1930

Lowell Observatory's sole trustee, Roger L. Putnam, sent this telegram in response to the plentiful requests for more information on the recently…

Shapley, Harlow, Harvard College Observatory Announcement Card, 1930-03-13.

On March 13, 1930, Harvard College Observatory announced the discovery of the new trans-Neptunian planet which had been predicted by Percival Lowell…

Putnam, Roger L., Letter from Roger L. Putnam to V.M. Slipher Concerning Name Suggestion Letters for Planet X, 1930-03-15.

Newspapers across the United States urged the public to send name suggestions for Lowell Observatory's newly discovered planet. According to sole…

Unknown, Clyde Tombaugh and his 9-inch Telescope

Pluto's discoverer, Clyde Tombaugh, is pictured here with one of his homemade Newtonian Telescopes. Tombaugh developed a passion for science at a…

North American Newspaper Alliance, Telegram from North American Newspaper Alliance Regarding Information about the New Planet, 1930-03-13

This telegram sent to Lowell Observatory from the North American Newspaper Alliance requests a five hundred word statement on the newly discovered…

Putnam, Roger L., Roger L. Putnam's Telegram to Lowell Observatory Concerning Planetary Computations, 1930-03-15

In this telegram from Roger L. Putnam, Lowell Observatory's sole trustee, Putnam urges the observatory to comply with all information requests…

Lowell Observatory, Requests for Information Regarding Planet X, 1930

Following the announcement of a new planet, Lowell Observatory received hundreds of information requests from the press, professional scholars, and…

Greenwald, Sandford E., Letter Regarding the Screening of Planet X Motion Picture at the Orpheum Theatre, 1930-03-31

In this letter to V.M. Slipher, Sandford E. Greenwald reveals that a motion picture about the discovery of Planet X will be featured at the Orpheum…