Moon Facts • Actual name is Luna • The Moon is the Earth’s only natural satellite. • It is the fifth largest moon in the Solar System. • Average distance from the Earth: 238,900 miles • Orbits the Earth every 27.3 days • The first person to set foot on the Moon was Neil Armstrong.
Size of the Moon • The Moon’s diameter is 2,159 miles. • It would take 81 Moons to equal the mass of the Earth.
Craters • What is a crater? • A large, bowl-shaped cavity in the ground or on the surface of a planet or moon caused by an explosion or an impact. • There are millions of impact craters on the surface of the Moon.
Types of Impact Craters • Simple Craters • Have a diameter less than 15 kilometers • Simple, bowl-like form
Types of Impact Craters • Complex Craters • Have a diameter more than 15 kilometers • Shallow, flat floors
Types of Impact Craters • Impact Basin • Have a rim diameter greater than 300 kilometers • Produce faulting and other crust deformations • Over 40 on the surface of the Moon
Largest Crater on the Moon • South Pole-Aitken Basin • Located on the Southern Pole of the far side of the Moon. • Basin is approximately 1,550 miles in diameter and 7.5 miles deep.