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3D Space Screensaver
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9.95 $
1.8 Mb
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This screensaver showing the Solar system. Using this programme you will be moving yourself between the planets of Solar system watching the wonderful views of the planets. Soft music and your traveling in 3D Solar system will perfectly influence on your emotional mood. |
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Have you ever tried to count
the stars in the night sky? Nobody knows how many there
are. A group of stars is called a galaxy, and there are
millions of galaxies in the universe. Our sun is one of
the smallest stars on the edge of our galaxy, the Milky
Way. Imagine the sun is one grain of sand. Now add a
bucket of sand to it - that represents the stars in the
Milky Way. Now try to imagine how many buckets of sand
there are in the Sahara desert, and you have an idea of
how many stars there are in the universe! Let's imagine a tour of our solar system. We begin our journey from the sun, but of course we could never live there - the temperature on the surface is 6000°C! The first planet we see is Mercury. If is strange because the same side always faces the sun, so one half of the planet is very hot and the other extremely cold. It orbits the sun once every 88 days. The next planet we see is cloudy Venus. The thick gases in its atmosphere have created a "greenhouse effect", with temperatures of up to 500°C during the day! (The highest temperature recorded on Earth is 57°C in Death Valley.) Our Earth is the next planet we pass on our journey. We think it is the only planet with life. After Earth is Mars. People used to think there was life on Mars because they thought they could see "canals" on its surface. We now know this is not true. The next four planets are giants. Jupiter, the next stop on our tour, has a mysterious "red spot" on its surface. This spot, which moves, is many times bagger than our Earth! Next is Saturn, famous for its colourful rings of rock and ice which go round it. A person standing on Saturn and looking up at the rings would see a beautiful rainbow in the sky. We know very little about the next two giant planets, Uranus and Neptune, and even less about tiny Pluto, the furthest planet from the sun. Pluto takes 248 Earth years to round the sun! |
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