Men have always been looking into the skies. While NASA had grounded the shuttles forever and left the fates of going into orbit to untested companies, funds been cut from the government for political reasons, the Defense Advanced Research Projects Agency (DARPA) is now trying to get some people to start planing for space travel to the nearest star. For current technologies, it is impossible, even to reach the next nearest planet, or even the moon. The last time someone went to the moon they are unable to stay long unless they have improved equipments for long stay. Imagine cycling from the borders of Canada to the border of Mexico, that would take months. Including the rider would have to take breaks and rest. Current spaceships all kind of using rocket boosters. It takes fuels and before halfway to it's destination it would need refuel. Also the crew will need to survive the conditions in long term space flight. Space travel will need miracles.
http://www.geek.com/articles/geek-cetera/darpas-100-year-starship-study-sponsors-research-for-interstellar-travel-20110818/
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