The History of Observations of Mars In The 20th Century


 Date

 Event

 1906  Mars and its Canals published, Percival Lowell.
 1906  Earl C. Slipher arrives at Lowell Observatory and continues his photographic studies.
 1907  "...the proof by astronomical observations...that conscious, intelligent human life exists upon the planet Mars," reported as (one of) the most momentous events of 1907 by the Wall Street Journal.
 1908  Mars as the Abode of Life published, Percival Lowell.
 1909  George Ellery Haleusing using the Mt. Wilson 60" reflector, sees "...not a trace" of canals.
 1911  A Princess of Mars, first of eleven "John Carter on Mars" novels, published by Edgar Rice Burroughs (uses Schiaparelli nomenclature; Martians have green skin).
1914  Panama Canal completed.
 1926  Large day/night temperature difference (implication of thin atmosphere) measured by William Weber Coblentz and Carl Otto Lampland.
 1930  Attempts to detect oxygen on Mars fail.

10/30 1938

 "War of the Worlds" broadcast by Orson Welles (Grovers Mill, New Jersey landings). Estimates that 1.2 million, of the 6 million, listeners thought it was a real invasion.
 1947  Carbon dioxide, but no oxygen, detected by Gerard Peter Kuiper
 1947 "Mars Project"(10 ships, 70 crewmembers) proposed by Werner von Braun.
 1962 von Braun considers the "Mars Project" to be 15-20 years away.
 1965  NASA Sourcebook on Space Sciences: most astronomers would probably agree that there are apparently linear markings...of considerable length on the surface of Mars.
 7/14/1965  Mariner 4 flyby, discovers craters on Mars and little else

A look at all of the Martian related space missions in the past 35 years