Sabtu, 25 Juni 2011

the Moon

Moon is the earth's satellite which we often see in the night. The Moon is the one place in our solar system where humans have visited. For the firs time on July 20, 1969, astronauts Neil Armstrong and Edwin Aldrin landed the Lunar Module of Apollo 11 on the surface of the Moon. Neil Armstrong was the first man to walk on the Moon. However do you know what descriptive facts about the Moon are?The moon rises in the east and sets in the west. It moves toward the east in our sky by about 12 degrees each day. The Moon is about 384,400 kilometers from Earth. The Moon has a diameter of 2,000 miles which is like to 3,476 kilometers.

The surface of the Moon has many things, such as craters, lava plains, mountains, and valleys. Scientists believe the craters were formed around 3.5 to 4.5 billion years ago by meteors hitting the moon's surface. The Moon does not have atmosphere, wind and weather that is why the footprints left there on the Moon by the Apollo astronauts will remain there for millions of years.

The Moon is not a light source. It mean that Moon does not make its own light. It reflects light from the sun. All of us can can see the Moon especially in the night because light from the Sun bounces off it back to the Earth. If the Sun wasn't there, we can not see the Moon.

The moon influences many of the tides in the oceans. This is because of the gravity force between the Earth and Moon. At full Moon and new Moon, the Sun, Earth and Moon are lined up, producing the higher than normal tides. When the Moon is at first or last quarter, it forms smaller neap tides.

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