Get Exploring Mars PDF

By Peggy Parks

ISBN-10: 1590186362

ISBN-13: 9781590186367

Grade 5-7-This drab yet systematic survey deals scholars an summary of our research of the crimson Planet, from historical observations of its probably abnormal course throughout the sky to NASA's April 2004 determination to increase the missions of rovers Spirit and chance. regardless of infrequent and clumsy efforts to rev it up ("After screaming via area at 16 thousand miles consistent with hour:"), the prose is as dry because the Martian floor, and a number of other of the accompanying, faded-looking black-and-white pictures or diagrams upload neither info nor perception. nonetheless, decided readers will locate lots of present details, plus a strongly made case for sending people to Mars, and, to shut, rather thorough and resource lists. whereas Seymour Simon's vacation spot: Mars (HarperCollins, 2000) or Stuart Murray and Edward S. Barnard's Mars (DK, 2004) have a ways enhanced browser allure, Parks's booklet is an appropriate selection for deeper topic collections.

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Extra info for Exploring Mars

Sample text

Mars Observer’s main goal was to scan the entire Martian surface, taking photographs that were in much finer detail than any taken before. The spacecraft carried a wide array of sophisticated instruments, one of which was designed to measure Mars’s magnetic fields. It did not accomplish its mission, however. After traveling for eleven months, Mars Observer was lost just three days before it was scheduled to reach Mars. Investigations showed no evidence of a cause, but scientists believed that a clogged fuel line had likely ruptured, crippling the spacecraft and ending all transmissions.

Even though Mars is barren and desertlike today, the knowledge that water once ran freely across the planet opens up an intriguing possibility: that some form of life once existed there. Robert Zubrin explains why he is one of the scientists who subscribes to that theory: All creatures great and small surviving in extreme environments have one thing in common: their environment includes a source of water, however meager. ”16 41 Chapter 3 The Space Race L ong before the existence of spacecraft, people were dreaming about the day when exploring Mars would be possible.

They sent back a series of photographs, but because of the dust storm the images were no more discernible than the photo taken by Mars 3. The spacecraft were able to take measurements of the planet’s temperature, gravity, and magnetic fields, though, and these findings were transmitted back to Moscow. An American President’s Vision The Soviet Union was highly secretive about its Mars missions, so the details were not known for many years. However, the United States was well aware of the Soviets’ aggressive pursuit of space exploration, and that fueled America’s interest in its own space program.

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Exploring Mars by Peggy Parks


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