People can see the Andromeda galaxy, the Large and Small Magellanic Clouds.
All of us know that we live on the Earth. But what do we know about it?
The Earth is the fifth largest of the nine main planets in the solar system. It is the third planet from the Sun.
The Sun is just one of many stars in the Milky Way Galaxy.
The Earth looks blue from space because 70% nearly three quarters, is covered with water.
There are four oceans on the Earth: the Pacific, the Atlantic, the Indian and the Arctic.
The oceans contain 97% of all the water on the Earth.
What do you know about the Earth? Here is an interesting experiment to help you imaging how big the Earth is.
Stand up, hold the hand of your partners, stretch your arms as you can. Now imagine that you are trying to reach from pole to pole. Do you know what the distance is from pole to pole? Its 20,000 kilometers.
They say it would take twelve and a half million people holding hand to stretch from pole to pole. Are you impressed?
We do not know when men began to dream of travelling in space. The first story that we know about a space flight was written in the year 150.
In the sixteenth century, Galileo made the first telescope. Не looked through it at the moon and the planets.
Now nobody could say for certain that the Earth was the only world, and many new space- travel stories appeared.
In 1865 Jules Verns famous novel From the Earth to the Moon was published.
In his story, he sends his heroes into space by means of a huge gun.
Another space-travel story is The First Men in the Moon by H.G. Wells. Wells heroes have a wonderful substance that helps their spaceship to fly away to the moon.
But the dream of travelling into space became true only in the 20 th century. It happened in November The first animal in space was Laika, a dog from Russia.
Then in 1961, all people on the world learned about the first man in space Yuri Gagarin