Wednesday, February 10, 2010


Light is light, years is time. How can light become time? Is it true?. What is it actually?. To all reader, Don`t be confuse, whether you can accept or not. I give you the answer, “LIGHT YEARS’’ IS ALL ABOUT DISTANCE!.
Light years is a distance for light travelling for one year period. As we know, speed light can be consider as the highest speed in universe, it speed is about (3.08x108 m/s). so how far it can go for 1 year?.

From the equation:
Speed=distance (m)/time (s)

In one year we have: 1year x 365 day x 24hours x 60minuts x 60seconds = 31536000 s
Speed of light: 3.08x108 m/s
So distance traveling in 1 year: 3.08x108m/s x 31536000s = 9.46x1012 km

You see? Light years are about distance, not time. Can you imagine how far it is? It about 10trillion km light will cover in one year. At that distance, it can turn this word for 236million time! Amazing right?.. But, you may think that distance is much enough to reach the nearest “beautiful” star that we can see in the night on sky. However, sorry to say, no!. The nearest star is much far than that even as we can imagine.
From this world. The nearest star is about 4.3time light years OR 4,3LY. It is about 40 trillion km. I also indeed to tell you, the other “beautiful” star you can see, the distance from us can be reach hundreds light years or even thousands time more than that!.


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This blog is all about knowledge.. All the information is referred from the book that i have read and understand (VOYAGES to the planets, 3rd edition, written by: Fraknoi, Morrison and Wolff)
..I hope, this blog can be one of medium to us to understand about universe. In the night we look to sky and we see a distribution of light, Owh that`s star. But, the question is, what it is actually?
I, the person with a limited knowledge also a poor human try the best thing for my life and other people.

"Behold! in the creation of the heaven and the earth; in the alternation of the night and the day; in the sailing of the ships through the ocean for the profit mankind; in the rain which Allah sends down from the skies, and the life which He gives therewith to an earth that is dead; in the beasts of all kinds that He scatters through the earth; in the change of winds, and the clouds which they trail like their slaves between the sky and the earth-(here) indeed are signs for a people that are wise." -(Al-Baqarah 164)

*(most important message to all reader :
sorry for all grammar mistake :P )