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Since the Space Shuttle flew its final mission on July 8, 2011, NASA's been challenged with the chore of transporting US astronauts, payloads, and satellites into outer space without the vehicle that provided such service for almost 30 years. While rockets can launch satellites into orbit, the US pays Russia $70.7 million for each one-way rocket ticket to shuttle astronauts to and from the International Space Station. However,reacting to recent US sanctions levied in response to Russia's invasion of Crimea, Putin announced that these flights will cease in 2020.
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