Tuesday, August 08, 2006

Celestial Wonders

Heres li'l list of tid-bits to tinkle the mind.........

Antares is the 15th brightest star in the sky. It is more than a 1000 light years away.
And what is a light year ? The distance travelled by light in one year.
Which is 9.4607 × 10 12 km or 63,240 AU or 0.3066 parsecs.
The distance that a particle of light (photon) will travel in a year - about 10 trillion kilometers
(6 trillion miles).
The nearest star to our sun is four light years away, and our galaxy is about 100,000 light years across.
Despite its odd name, a light year is a measure of distance, not time.
It actually designates the distance that light can travel in one year, which equals 9,460,000,000,000 km.
A ray of light travels 186,000 miles per second!
And here is the most interesting fact;
Time taken by Sunlight to reach the Earth = 8 minutes

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