A half-century later, Apollo 13 is still considered Mission Control’s finest hour.
By Marcia Dunn, Associated Press
NASA has unveiled plans for crew and launch vehicles to return humans to the moon as the first steps toward building an outpost there and eventually traveling to Mars. NewsHour correspondent Tom Bearden takes a closer look at NASA's space…
Two years after President Bush proposed to return astronauts to the moon, NASA announced plans Monday for manned trips there by 2020 and the construction of a permanent base, most likely near the Shackleton crater on the moon's south pole,…
By PBS NewsHour
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