Labels: text | wheel | screenshot | auto part | machine | tire OCR: EN ROUTE FOR MARS VIKING 1 AND 2 Mariners 6 and 7 It was five years before the next Mars mission was launched. During this time, the Moon was the focus of space research. The Apollo program was crowned with success when the Apollo 11 crew made the first successful manned lunar landing on July 20, 1969. A few days later, on July 31, Mariner 6-launched on February 25, 1969-flew within 3427 kilometers of Mars. Mariner 6 obtained about 100 Mariner 6 photographs during the approach and fly-by. In addition its ultraviolet spectrometer, sweeping the planet in three seconds, revealed the existence of a hydrogen bubble around Mars. Mariner 7, Mariner 6's twin, was launched on March 27, 1969. The photos from Mariner 7 were even better than those taken by Mariner 6. On August 5, Mariner 7 passed within 3347 kilometers of Mars. The probe also measured the temperature of the planet's polar cap at - 118 C. MARS BETAT
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