The Earth's Moon
Inside Earth's MOON SPACE, Our large natural satellite always presents the same face to the Earth, because it completes one orbit of Earth in about the same span of time it takes to complete one rotation. The dark plains on the side facing Earth are volcanic features called seas, or "maria." The first human landing on the moon took place on the Sea of Tranquility. APOLLO 11 GRAVITY SURFACE CONDITIONS AIR PRESSURE: none LANDING SITE 0.17 OF PARTLY EARTH MELTED LITHOSPHERE TEMPERATURE RANGE: from OUTER about -280°F (-173°C) at night to +260°F (+127°C) in the daytime at the equator SOLID CORE CRUST IRON CORE EARTH MOON 10 ft 58.9 ft Astronaut James Irwin on the moon, Apollo 15, August 1971 The moon is 2,159 mi (3,474 km) in diameter, about 1/4 that of Earth dunk dunk SOURCE: NASA KARL TATE, SPACE.com
The Earth's Moon
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