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Our Moon
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Slide 1

The Moon

The Moon

A look at our nearest neighbor in Space!

Slide 2

What is the Moon?

What is the Moon?

A natural satellite

One of more than 96 moons in our Solar System

The only moon of the planet Earth

Slide 3

Location, location, location!

Location, location, location!

About 384,000 km (240,000 miles) from Earth

3,468 km (2,155 miles) in diameter (about ¼ the size of Earth)

Slide 4

Birth of the Moon

Birth of the Moon

Born 4-5 billion years ago

Formed from impact of Mars-sized planetesimal on Earth

Debris from both objects melted together to form the Moon

Slide 5

Cut to the Core

Cut to the Core

3 major divisions of the Lunar interior

Crust - average thickness of about 70 kilometers

Mantle

Core - radius is between 300 and 425 kilometers

Slide 6

The Moons Surface

The Moons Surface

No atmosphere

No liquid water

Extreme temperatures

Daytime = 130C (265F)

Nighttime = -190C (-310 F)

1/6 Earths gravity

Slide 7

Lunar Features - Highlands

Lunar Features - Highlands

Mountains up to 7500 m (25,000 ft) tall

Rilles (trenchlike valleys)

Slide 8

Lunar Features - Craters

Lunar Features - Craters

Up to 2500 km (1,553 miles) across

Most formed by meteorite impact on the Moon

Some formed by volcanic action inside the Moon

Slide 9

Lunar Features - Maria

Lunar Features - Maria

Originally thought to be seas by early astronomers

Darkest parts of lunar landscape

Filled by lava after crash of huge meteorites on lunar surface 3-4 billion years ago

Mostly basalt rock

Slide 10

Lunar Features - Maria

Slide 11

Movements of the Moon

Movements of the Moon

Revolution Moon orbits the Earth every 271/3 days

The moon rises in the east and sets in the west

The moon rises and sets 50 minutes later each day

Rotation Moon turns on its axis every 27 days

Same side of Moon always faces Earth

Slide 12

Far Side of the Moon

Far Side of the Moon

First seen by Luna 3 Russian space probe in 1959

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