Facts: FORMATION OF STARS

Sunday, August 14

FORMATION OF STARS

Nebula

Stars are constantly being formed in outer space. Scientists believe that a star is formed from a nebula. A nebula is a large cloud of dust and gas, mainly hydrogen, in outer space. The dust and gas in the nebula condense and become compressed to the gravitational attraction of the particles. The compressed dust and gas become very hot and dense until a very high temperature is reached.

The very high temperature causes thermonuclear reactions to take place. In a nuclear reaction, Hydrgogen aoms combine or fuse together to form helium atoms. This nuclear reaction produces a tremendous amount of heat and light. So the ball of dense compressed dust and gas gives out its own heat and light. Thus a star is formed. A star takes millions of years to form.

2 comments:

teacher_hazura15 November 2011 at 17:02
good job and thank you for participating in the program! ;) ~ Teacher Zura
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teacher_hazura15 November 2011 at 18:03
..but need more content and pls be informative..tq
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Science

Science (from Latin: scientia meaning "knowledge") is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. An older and closely related meaning still in use today is that of Aristotle.

Since classical antiquity science as a type of knowledge was closely linked to philosophy. In the early modern era the two words, "science" and "philosophy", were sometimes used interchangeably in the English language. By the 17th century, "natural philosophy" (which is today called "natural science") had begun to be considered separately from "philosophy" in general. However, "science" continued to be used in a broad sense denoting reliable knowledge about a topic, in the same way it is still used in modern terms such as library science or political science.