Articles

Articles

  • Why are planets round?

    Scientists have observed that all solar systems start out pretty much the same. It begins in the star nursery which is called a nebulae. A nebulae is a massive collection of gas, dust and debris that is incredibly concentrated. When enough pressure builds up or there is an outside force (like an exploding star from somewhere else), the nebulae explodes and...
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  • Why do some scientists consider Pluto to not be a planet?

    Pluto was discovered around 1930 and, during that time, the telescopes were not as good as they are now and they thought that Pluto was the only planet out in the vast outer area of our solar system. Pluto was always considered to be a strange planet but it was a favorite among the planetary scientists. It was named after a mythological Greek god (not the...
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  • Why are there seasons?

    Every area of the earth experiences the four seasons. Depending upon where you live, the seasons can be different. We divide these seasons into spring, summer, fall and winter. Some areas of the planet experience extremely hot or extremely cold temperatures, while others vary lightly or are even mild. The reason that we have the seasons has to do with how...
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  • Why the sky is blue

    We can look up at the sky and see the blue color. Many of us spend lovely spring and summer days laying in the grass and watching the white clouds float by in the beautiful blue sky. But what makes the sky the blue color?
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  • Why is space black?

    On earth, we have the sun close to our planet and it gives us an excellent level of light so that we can see everything around us in wonderful colors. At night, we see darkness because the light of the sun is gone. Therefore, we can assume that where there is no light, there is darkness. Our sun is like many of the stars that we see at...
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  • Why can’t we launch garbage into space?

    Humans produce huge amounts of garbage every day, in every country, all around the world. There is an estimation that the United States alone produces around 208 metric tons of garbage on a daily basis. That’s a lot of trash. We are experiencing problems in what to do with all of this trash. Some recycling programs take care of part of it, but there is...
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  • Why do stars shine?

    We can look out into the night sky and see billions of stars shining brightly. The number and brightness will depend on where you live. People that live in cities have a lot of bright lights that keep them from seeing as many stars, but those that look up at the sky in the country can see many more. Stars are actually suns, in the same way that our sun...
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  • Why is the sun hot?

    Our sun is the main reason that we have life on our planet. The earth is in our solar system in just the ‘right’ position so that we aren’t too close to the sun to get burned to a crisp and not too far away to become a planetary snowball. The sun is a sphere of hot gases that burn and give off heat that warms. This heat expands into...
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  • Why is the sunset red?

    The light that we see looks white, but if you look through a prism you will see that light is actually divided up into many colors. These are the colors of the light ‘spectrum’ and are the same ones that we see in a rainbow. We see all of the colors, with the exception of ‘indigo’ with our eyes: ROY G BIV: red, orange, yellow, blue,...
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  • How Fast Does the Earth Rotate?

    The Earth is the third planet from the sun, and is a rocky planet with a solid body. The Earth rotates around its axis (an imaginary line which goes from the North Pole to the South Pole) in a counter-clockwise direction. The angle of the axis on which the Earth rotates is tilted from the angle at which the Earth orbits the sun: imagine the Earth standing...
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