| 1 | And that' s what NASA expects of these future astronauts, too. | |
| 2 | But, despite the evidence, NASA said it wasn' t life. | |
| 3 | NASA researchers are calling for a new version of Levin' s experiment to be flown to Mars. | |
| 4 | So far that market is controlled by countries like the United States, Russia and China and the European Space Agency. | |
| 5 | Until then, the space agency will continue to shell out tens of millions of dollars per seat on Russian Soyuz spacecraft. |
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