Lowell, Percival, "Mars Observations 1894-1895", 1898
Preliminary manuscript of Percival Lowell's essay on observations of Mars from 1894-1895 in the Annals of Lowell Observatory, Volume I
Slipher, V. M., List of stars Having Variable Radial Velocities, 1904, 1904
1904 List of stars Having Variable Radial Velocities Used for Bulletin # 11 and for Astrophysical Journal 20:146:48
Unknown, Tom Stafford, E.C. Slipher, and Neil Armstrong Examine a Map of Mars, 1963-01-16
During the "Next Nine" astronauts’ January 1963 visit to Lowell Observatory, staff briefed them on the observatory’s efforts to map the Moon and Mars.…
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Lowell, Percival, 'Laplace Justified", 1913
Percival Lowell indicates that at his observatory, refined observations by telescope and spectroscope give confirmation of the nebular hypothesis…
Lowell, Percival, 'The Canals of Mars - Photographed", 1905
Percival Lowell's articles describing the task of photographing the canals of Mars in Lowell Observatory Bulletin #21.
Lowell, Percival, "A General Method for evaluating the surface temperature of the Planets; with special reference to the temperature of Mars", 1907-07
Percival Lowell's article on a general method for evaluating the surface temperature of the planets in Philosophical Magazine.
Lowell, Percival, "A New Method for Spectrographic Testing of the Martian Atmosphere", 1905
Percival Lowell's article on a new method for spectrographic testing of the Martian atmosphere in Lowell Observatory Bulletin #17.
Lowell, Percival, "A Standard Scale for Telescopic Observation", 1902-11
Percival Lowell's essay on a standard scale for telescopic observation in the Monthly Notices of the Royal Astronomical Society (November, 1902) and…
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