space exploration
Space Exploration is the quest to use space travel to discover the nature of the universe beyond earth. Today's Space Exploration started in 1957 with the launch of the first artificial satellite, but since ancient times people have dreamed of leaving their home planet and exploring other worlds. Every era through out history has had a belief as to what the "heavens" are made form. The Greeks believed that the stars and space were made of a material called "Quitenses", and other culture once thought that the stars were made of their peoples passed away. We know now what stars (or suns) are really made of; they are made of various gases that explode over and over again.Mankind has come along ways from the days when we could only guess what was out there. The history of Space Exploration really began in 1957 with the launch of the first artificial satellite, Sputnik 1, sent into space by the Soviets. Up until about 43 years ago people did not have the means to travel to or send objects into space. The hardest part of traveling into space was developing rockets that were powerful enough and reliable enough to boost an object into space. These rockets needed more then just brute force, they also needed a
The next major event in the history of space exploration was on July 20 of 1969, when Neil Armstrong and Edwin Aldrin, of the USA, took the first step by a human or any other creature from earth on to the moon. Neil Armstrong's words "That's one small step for man, one giant leap for mankind", may be wrong, he later stated that he had intended to say "That's one small step for (a) man, one giant leap for mankind" but because of static in the recording it will never be known if he said it or, merely meant to say it. ------------------------------------------------------------------------ 1. Microsoft Encarta '99, S.v. "Space Exploration", by Andrew Chaikin In Space Exploration today one of the major factors that affect every mission is cost. One of the goals at NASA is be able to get to space but with out the same costs as there is now. The biggest cost is to launch the rocket itself, to put something into space it costs about $10,000 for every 10 kg, so to put one person into space it costs about $65,000 (this doesn't include the spacecraft that is needed to get this person there). NASA is always developing new forms of propulsion to move spacecraft into space; things that they look for are cheap, reliable, and reusable. Right now most multistage boosters are not reusable, which makes them expensive. Engineers at NASA would like to create a vehicle that was completely reusable; this would cut cost by a large margin.
Some common words found in the essay are:
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Approximate Word count = 1171
Approximate Pages = 5 (250 words per page double spaced)
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