| Date | Text | |
|---|---|---|
13 Nov 1971
Mars satellite |
Mars satellite In 1971, Mariner-9, the first man-made object to orbit another planet, entered Martian orbit. The mission of the unmanned craft was to return photographs mapping 70% of the surface, and to study the planet's thin atmosphere, clouds, and hazes, together with its surface chemistry and seasonal changes. |
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13 Nov 1971
Mariner program |
Mariner program (astronomy and space ) Mariner program: Mariner 9 enters Mars orbit. |
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