April 13, 2009

Astronomy For Teens.

Astronomy is a very serious science, although many people get involved with it when they are very young. Astronomy for kids is a thought provoking pursuit that can teach them about the sciences in general. A number of astronomy subjects interest kids and movies like Star Wars only serve to increase this attraction.

Our only natural satellite is called the moon. Its path around the Earth takes just over twenty seven days to complete. Man’s knowledge being what it is and because the moon is so close, it is the only space object that mankind has ever set foot on, except for the Earth of course. The effects of gravity between the moon and Earth causes the tides. The moon is one of the first objects that sparks a child’s interest in astronomy because it can be clearly seen with the human eye.

Then there’s our sun. Earth is quite far from the sun. The distance fluctuates between about 91 million miles and about 94 million miles, although these measurements are not completely accurate. They are inaccurate measurements, because the Earth orbits the sun in an uneven ellipse. Life on Earth is only possible because of the sun, because it provides us with important elements such as light and heat. It is not a well-known fact that the sun contains about 98% of all the mass available in the solar system. Think about how small a person is compared to that – it is truly imponderable!

Our sun and solar system reside in a galaxy called the Milky Way. Just as other galaxies, ours contains gas and clouds of dust, stars and planets and other space materials. Even with all this stuff to fill it, it’s mostly empty. That’s a lot of nothingness because our galaxy is 100,000 light years across and 3,000 light years deep. The center of our galaxy is about 30,000 light years from Earth. The nothingness is broken up by over 100 billion stars. The galaxy’s name comes from the many stars near the center. From Earth it looks like a Milky Way, a large pool of milk. Our galaxy is called a spiral galaxy as opposed to the other three main types which are elliptical, lenticular and irregular.

You can find a wealth of resources concerning astronomy for teens on the world wide web. Kids could spend hours wrapped in detailed 3D representations of the universe around us.

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