An exact defenition please...?

Question

I kno this might seem a bit obvious, but i would like to know what exactly a star is

Answer 1

A star is an object in outer space that is made of very hot plasma (which is like a gas). Stars get energy through nuclear fusion, causing them to give off light, making them look like they are on fire. Most stars look like shining dots from Earth, because they are far away, and Earth's atmosphere makes it harder to see them. Our Sun is a star that is much closer to us. The earth moves around (orbits) the Sun. The Sun and all things that orbit it are called the Solar System. Many other stars probably have planets orbiting them too. Scientists have found some of these planets, but so far none are like the Earth.

Answer 2

The basic difference between a star and a planet is that a star emits light produced in its interior by nuclear 'burning', whereas a planet only shines by reflected light.

There seem to be an enormous number of stars that are visible to the naked-eye at a really dark site but, in fact, the eye can only see about two thousand stars in the sky at one time. We can see the unresolved light of many thousands more when we look at the Milky Way, and the light of the Andromeda galaxy which can be seen by the eye comes from thousands of millions of stars.

The Sun is our own special star yet, as stars go, it is a very average star. There are stars far brighter, fainter, hotter and cooler than the Sun. Basically, however, all the stars we can see in the sky are objects similar to the Sun.

The Sun (and any other star) is a great ball of gas held together by its own gravity. The force of gravity is continually trying to force the Sun towards its centre, and if there were not some other force counteracting it the Sun would collapse. The necessary outward pressure is produced by the radiation from the nuclear energy generation in the Sun's interior.

Answer 3

Star - –noun 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night.
2. Astronomy. any of the large, self-luminous, heavenly bodies, as the sun, Polaris, etc.
3. any heavenly body.
4. Astrology. a heavenly body, esp. a planet, considered as influencing humankind and events.
5. a person's destiny, fortune, temperament, etc., regarded as influenced and determined by the stars.
6. a conventionalized figure usually having five or six points radiating from or disposed about a center.
7. this figure used as an ornament, award, badge, mark of excellence, etc.: The movie was awarded three stars.
8. Jewelry. a. a gem having the star cut.
b. the asterism in a crystal or a gemstone, as in a star sapphire.
c. a crystal or a gemstone having such asterism.
d. star facet.

9. Printing. an asterisk.
10. a person who is celebrated or distinguished in some art, profession, or other field.
11. a prominent actor, singer, or the like, esp. one who plays the leading role in a performance.
12. U.S. Military. battle star.
13. U.S. Navy. a. a gold or bronze star worn on the ribbon of a decoration or medal to represent a second or subsequent award of the same decoration or medal.
b. a silver star worn in place of five gold or bronze stars.

14. a white spot on the forehead of a horse.
15. Heraldry. a mullet.
–adjective
16. celebrated, prominent, or distinguished; preeminent: a star basketball player; a star reporter.
17. of or pertaining to a star or stars.
–verb (used with object)
18. to set with or as with stars; spangle.
19. to feature as a star: an old movie starring Rudolph Valentino.
20. to mark with a star or asterisk, as for special notice.
–verb (used without object)
21. to shine as a star; be brilliant or prominent.
22. (of a performer) to appear as a star: He starred in several productions of Shaw's plays.
—Idioms
23. make someone see stars, to deal someone a severe blow causing the illusion of brilliant streaks of light before the eyes: The blow on the head made him see stars, and the next thing he knew he was in the hospital.
24. thank one's lucky stars, to acknowledge one's good fortune; be grateful: Instead of complaining about hospital bills she should thank her lucky stars she's still alive. Also, thank one's stars.

Answer 4

A huge ball of gas that emits light. The "energy" of a star is the by-product of fusion (smashing smaller elements like hydrogen together into bigger elements like helium).

Answer 5

There are far too many star types to list here. Try this site at Yahooligans.

Answer 6

An overpaid egomaniac who often appears in films, much to the detriment of aspiring actors with actual talent :)

Answer 7

A ball of gas. The color depends on how hot the gas is burning.

Answer 8

do you know who "they might be giants" is? listen to their song about how a star is a ball of gas burning at a billion degrees

Answer 9

star, hot incandescent sphere of gas, held together by its own gravitation, and emitting light and other forms of electromagnetic radiation whose ultimate source is nuclear energy.


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Answer 10

a five pointed picture symbol