Earth from Space (no audio)
Days, Nights, Months, and Years
Seymour and special guest, Rosie, investigate why we have day and night.
They discuss the movement of the Earth in relation to the Sun, and they
explain how days, months, and years are measured.
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More Videos...
This video explores the movement patterns of Earth, the Moon, and the
Sun, including why the Moon can sometimes be seen during daytime.
Apollo 17 astronauts sing as they enjoy a stroll across the surface of the Moon in this authentic clip from 1972.
In addition to studying outer space, NASA scientists study Planet Earth.
Orbiting satellites help to monitor and study Earth's atmosphere,
oceans, forests, and polar ice sheets.
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