Which detail from "Go, John Glenn!" best explains how long it takes Friendship 7 to completely circle the earth? "With each hour-and-a-half orbit of Earth, Glenn watched the sun rise and set." "Five hours and 81,000 miles after he had taken off, John Glenn splashed down to a welcome…." "For almost four hours he waited, on his back, his feet pushed up in front of him." "For twenty minutes, the capsule bucked and lunged while the temperature around it climbed."