Stars
From Infocentral
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'''What is a comet?''' | '''What is a comet?''' | ||
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Comets are sometimes called dirty snowballs or "icy mud balls". They are a mixture of ices (both water and frozen gases) and dust that for some reason didn't get incorporated into planets when the solar system was formed. This makes them very interesting as samples of the early history of the solar system. | Comets are sometimes called dirty snowballs or "icy mud balls". They are a mixture of ices (both water and frozen gases) and dust that for some reason didn't get incorporated into planets when the solar system was formed. This makes them very interesting as samples of the early history of the solar system. | ||
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'''What is a Meteoroid?''' | '''What is a Meteoroid?''' | ||
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A meteoroid is a bright streak of light in the sky (a "shooting star" or a "falling star") produced by the entry of a small meteoroid into the Earth's atmosphere. | A meteoroid is a bright streak of light in the sky (a "shooting star" or a "falling star") produced by the entry of a small meteoroid into the Earth's atmosphere. | ||
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A super giant star is a type of star. | A super giant star is a type of star. | ||
| - | + | '''Measure:''' most super giants measure 400 km. | |
| - | Color: the older super giants are red and yellow and the new ones are blue. | + | '''Color:''' the older super giants are red and yellow and the new ones are blue. |
| - | Grades: A super giant has 3500-5000 grades. | + | '''Grades:''' A super giant has 3500-5000 grades. |
Distance from here to the earth: the closest super giant from here to there is at 93 million miles. | Distance from here to the earth: the closest super giant from here to there is at 93 million miles. | ||
Revision as of 22:14, 16 April 2007
What are stars made of?
Stars are made of gases like the air that is around us. Also they are of a massive, luminous ball of plasma. A star is made of a luminous celestial body, made up of plasma (particularly hydrogen and helium), forming a sphere.
How many stars are there in the space.
In the space there are about 100 thousand million stars in the Milky Way alone.
How far away are stars?
The closest star from here to the star is about 25,300,000,000,000 miles (39,900,000,000,000 kilometers).
What is a constellation?
A constellation is a group of stars that make a drawing of a mythology or story. Hercules was a mythological personage of the Greeks, so a group of stars made the form of Hercules.
What is a comet?
Comets are sometimes called dirty snowballs or "icy mud balls". They are a mixture of ices (both water and frozen gases) and dust that for some reason didn't get incorporated into planets when the solar system was formed. This makes them very interesting as samples of the early history of the solar system.
What is an asteroid?
Asteroids are in fact miniature planets in our own Solar System. They have their own orbits around the Sun and they rotate on their axis just like the Earth, this takes between 5 and 20 hours no matter how big or small the asteroid is.
What is a Meteoroid?
A meteoroid is a bright streak of light in the sky (a "shooting star" or a "falling star") produced by the entry of a small meteoroid into the Earth's atmosphere.
Extra
A super giant star is a type of star. Measure: most super giants measure 400 km. Color: the older super giants are red and yellow and the new ones are blue. Grades: A super giant has 3500-5000 grades. Distance from here to the earth: the closest super giant from here to there is at 93 million miles.
