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This was the USSR mission by sending a satellite into space. They were successful. This started the space race.
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USSR- the first animal to be sent into space. Laika was sent into space in a satillite named Sputnik 2. The mission was a success although Laika was not able to come home safely. They did not plan on a way to bring her home.
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USSR- They had a shuttle shot out and sent into orbit around the moon. By doing this, they were allowed to take pictures of the dark side of the moon.
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USSR- he is awarded with being the first person to be in space. He orbited the earth and came back in one piece. From that, he gained lots of fame and became a hero in the USSR
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american- this was the first out of the OSO series that were created to collect space dust and analyze gama/ultrviolet rays.
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american - this led to many more explorations in space no that the shuttles could be reused.
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american - this fly-bye made it possible to go to other places in the galaixies. By this working and pictures being taken, more probes have been sent in search of other planets and life.
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USSR- the docking feature is what makes longer trip into space possible. Without this docking sysytem, the journey to the particluar place would be a failure or at least more difficult.
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american - the first major realization of ultraviolet light and break through for advanced sciences. Expirements here led to the fact that they can harm you and be used for good as well
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USSR- the rovers were used to carry back space products that can be examined back on Earth. These rovers have been used later on for their effectiveness and ability to take pictures that can be used for other research.
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american - expirenments using x-rays that can be used in medical sciences
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USSR- impact of mars leads to the discoveries in the fact that it can be inhabbited by humans. It can support life given the time and resources
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USSR - space station. can be used as a pit stop for emergences and for communication between space and earth
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american: First mission to enter the asteroid belt and leave inner solar system
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american -Apollo 17 broke several records set by previous flights, like :the longest manned lunar landing flight and the longest time in lunar orbit. This mission was a 12 day mission. this marked the end of the apollo missions .