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[ Venus ]

·Astronomy: Venus - TRANSITS OF VENUS
·Astronomy: Venus - TELESCOPIC VENUS
·Astronomy: Venus - PENCIL AND CAMERA
·Astronomy: Venus - REPAVE THE PLANET
·Astronomy: Venus - THE LAVA PLANET
·Astronomy: Venus - Impact-HAVING AN IMPACT
·Astronomy: Venus - GREENHOUSE EFFECT
·Astronomy: Venus - THE EVENING STAR
·Astronomy: Venus - CONTINENTAL DIVIDE

  Planet: Astronomy: Planet - MARINER MISSIONS
Posted on Saturday, December 04 @ 17:48:51 CST by astronomy


While the Soviets were busy with Venus, United States scientists were conducting a series offlybys of the planet Mars. Mariner 4 was launched in November 1964 and yielded a total of 22 photographs that revealed a heavily cratered terrain. Mariners 6 and 7 produced 201 photos, including the first close-up views of a Martian polar cap.

The most successful of the early Mars missions was Mariner 9, which entered orbit around the Red Planet on 3 November 1971, and spent the next 349 days photographing the surface. The probe's two video cameras returned more than 7,000 images and obtained fascinating close-up views of the planet's two moons, Phobos and Deimos.

Both Venus and Mercury were the targets of Mariner 10, launched 3 November 1973. Its cameras, equipped with ultraviolet filters, took photos of the layered cloud tops of Venus and revealed a complex global circulation pattern. Then the probe flew on to Mercury, where it captured more than 10,000 close-up photos of the Moon-like surface and discovered the planet's magnetic field.




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