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The History of the Mars Pathfinder Mission

Meet Mars Pathfinder The Mars Pathfinder was the second of NASA's low-cost planetary Discovery missions to be launched. It was an ambitious way to send a lander and a separate, remote-controlled rover to the surface of Mars and demonstrated a number of innovative, economical, and highly effective approaches to spacecraft and mission design of a planetary landing mission.
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World War I: Oswald Boelcke

Oswald Boelcke - Childhood: The fourth child of a schoolteacher, Oswald Boelcke was born May 19, 1891, in Halle, Germany. A rabid nationalist and militarist, Boelcke's father instilled these viewpoints in his sons. The family moved to Dessau when Boelcke was a young boy and he soon suffered from a severe case of whooping cough.
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Top GRE Test Prep Books

If you're getting ready for the Graduate Record Exam, you'll want to check out these GRE Test Prep books because they're the best of the best. 01 of 04 New GRE 2011-2012: Strategies, Practice, and Review Kaplan has several GRE prep books but this one is clearly the best. It includes a DVD and 5 online practice tests (over 900 questions!
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Common Spelling Problems in English

Spelling words in English is challenging work. As a matter of fact, many native speakers of English have problems with spelling correctly. One of the main reasons for this is that many, many English words are NOT spelled as they are spoken. This difference between pronunciation and spelling causes a lot of confusion.
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