Sea history for kids: Voyages of Exploration

摘要

When NASA's Space Shuttle program ended in 2011, its five shuttles had taken a total of 355 people into space, orbited the earth 21,152 times, and traveled 542,398,878 miles over a 30-year period. Columbia, Challenger, Discovery, Atlantis, and Endeavour-these names are familiar to historians of an earlier Age of Exploration, back when people were first venturing across the world's oceans in search of new trade routes, unclaimed lands, and scientific knowledge.