Red Giant Show The Fact Of Star

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A group of international scientists have examined the rotation of an old star named 'Red Giant'. They found that from the outside, Red Giants seemed to revolve slowly, but the core spins 10 times faster than its exterior.

This discovery provides new insights about what will happen to the sun after 5 billion years.


"The core of a star determines how he develops, and a thorough knowledge of the rotation of a star to help us understand things that can happen as more parents of our sun," said Professor Tim Bedding of the School of Physycs at the University of Sydney.

Scientists using NASA's Kepler telescope to observe the aging process of Red Giants and their findings reveal about the differences in rotation between the core and the outer portion of the star.

Launched by MachineLikeUs, Wednesday (12/14/2011), a team led by Paul Beck of Leuven University in Belgium, mengalisa waves in the star, which is seen as a rhythmic variation on the surface of the star's light. Only slightly affects the star's rotation frequency of the waves so as to make them have to spend 2 years, to routinely retrieve data via the Kepler telescope.

"Red Giant was originally a Sun-like star, but as it ages, the star's outer layers expand more than 5 times their normal size, then experienced a significant cooling thus making it appear red," explained Dr. Dennis Stello, from the School of Physics at the University of Sidney.

"The opposite occurs in the core of Red Giants. Along with the contraction that occurred to him, the core becomes hotter and denser," he added.