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The first U.S. astronauts were a magnificent seven—military test pilots all, three Air Force, three Navy, one Marine—designated to fly Project Mercury capsules into space, then land them back on Earth. When the seven were selected in 1959, no one had ever come close to leaving our planet's atmosphere—and no one knew exactly what might happen if they actually succeeded.

The moon go round the earth.

The Hubble Space Telescope is a large telescope in space. NASA launched Hubble in 1990.

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industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations. click to let others know, how is it