The scope of exploration, and distances, involved in the vehicles’ respective journeys were scarcely comparable: Armstrong and Aldrin’s trip to the lunar surface required them to break entirely free of Earth’s gravity and embark on an eight-day round trip through more than 900,000 miles of outer space; the Space Shuttle would be required merely to travel into low Earth orbit—between 190 and 330 miles above sea level—where it would circle the planet for up to a week before returning home.
