The Encyclopedia Americana, Količina 18Americana Corporation, 1967 |
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Zadetki 1–3 od 11
Stran 319
... Mars and the spacecraft Mariner 4 permitted Mariner to pass within 6,118 miles of the planet's surface . MARS - MARSALA MARSEILLE MARSH MARIGOLD - MARSHALL MARSHALL MARSHALL. Mars at launch Halfway point March 21 , 1965 Mariner 4 on May ...
... Mars and the spacecraft Mariner 4 permitted Mariner to pass within 6,118 miles of the planet's surface . MARS - MARSALA MARSEILLE MARSH MARIGOLD - MARSHALL MARSHALL MARSHALL. Mars at launch Halfway point March 21 , 1965 Mariner 4 on May ...
Stran 319
... Mars lies beyond the earth , it orbits the sun at a slower speed than the earth does . The orbital speed of Mars is about 15 miles a second , compared with about 18.5 miles a second for the earth . Mars completes a revolu- tion around ...
... Mars lies beyond the earth , it orbits the sun at a slower speed than the earth does . The orbital speed of Mars is about 15 miles a second , compared with about 18.5 miles a second for the earth . Mars completes a revolu- tion around ...
Stran 321
... MARS Unmanned Probes . The success of the Mar- iner 4 probe in 1965 stimulated activity directed toward the exploration of Mars . The next Mars probe was tentatively scheduled to place two satellites in orbit around the planet in 1971 ...
... MARS Unmanned Probes . The success of the Mar- iner 4 probe in 1965 stimulated activity directed toward the exploration of Mars . The next Mars probe was tentatively scheduled to place two satellites in orbit around the planet in 1971 ...
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