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Mariner started its historic journey on Nov. 28, 1964, only three weeks after Mariner III failed because it could not jettison its protective shroud. A powerful Atlas-Agena rocket lofted the 575-lb. Mariner IV through Earth's atmosphere, then kicked it loose to take off on its own...
Such a maneuver is based on the solution of complex mathematical equations involving all the intricacies of space mechanics. Computers at JPL took into account Mariner's speed and trajectory, its location in relation to the point in Mars's orbit where the encounter should take place, and...
On Feb. 11, JPL signaled for a checkout of Mariner's photographic apparatus. The commands turned on and then turned off power to the tape recorder, and pointed the TV camera as it would have to be when it got close to Mars. Everything functioned well. Recalling the dust...
Now, Glenn serves as a consultant for NASA, keeping up with the latest details of the space program (although he ironically stayed up until 1:45 a.m. Thursday night, trying to catch a glimpse of the Mars picture on the wrong television channel.) and does a lot of work for...
ABC SCOPE (ABC, 10:30-11 p.m.).* "Mars Closeup: Are We Alone?" examines the information relayed by the Mariner spacecraft, scheduled to spin by Mars only 1½ hours earlier.