Word: flagstaff
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...Merle F. Walker and Robert Hardie, at the Lowell Observatory, Flagstaff, Ariz., measured Pluto's light with photoelectric apparatus. They found that it varied slightly in brightness and that the variations repeated themselves regularly, as if dark markings were passing across Pluto's disk. The period turned out to be 6.390 earth days, so Walker and Hardie concluded that this is the length of Pluto...
...than much smaller ones do; their purpose is to gather more light, making dim stars and nebulae bright enough to affect a photographic plate. Much the same result can be accomplished by amplifying dim light instead of gathering more of it. Dr. Albert G. Wilson, director of Lowell Observatory, Flagstaff, Ariz., believes that a 40-in. telescope equipped with a Lumicon will equal a 240-in. telescope in luminescence. The 200-in. Hale telescope on Palomar Mountain, the world's biggest, can be made to equal a 1,200-incher...
Last week at the Lowell Observatory, Flagstaff, Ariz., Astronomers Albert...
...news from Mars-brief as it was−was good. Astronomer E. C. Slipher, of Lowell Observatory, Flagstaff, Ariz., recently returned from South Africa confident that Mars, which often suffers from drought, has had an unusually fruitful year. At any rate, the markings on Mars, which shrink and grow with the changing Martian seasons and are believed to be due to vegetation, are bigger and more intensely colored this year than any Dr. Slipher has seen in his 50 years of Mars-watching...
...Flagstaff, Ariz...