A Quote by Sir Martin Rees, Astronomer Royal of Great Britain



Telescopes are in some ways like time machines...
They reveal galaxies so far away that their light has taken billions of years to reach us. We in astronomy have an advantage in studying the universe, in that we can actually see the past. We owe our existence to stars, because they make the atoms of which we are formed. So if you are romantic you can say we are literally starstuff. If you're less romantic you can say we're the nuclear waste from the fuel that makes stars shine. We've made so many advances in our understanding. A few centuries ago, the pioneer navigators learnt the size and shape of our Earth, and the layout of the continents. We are now just learning the dimensions and ingredients of our entire cosmoc, and can at last make some sense of our cosmic habitat.



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Wednesday, May 5, 2010

Origin of our universe - a new thought!

Many of us now tend to believe that the origin of our universe is the big bang. Recently I had a thought ... What if big bang was not the origin? What if it were just one of the events or for that matter one of the millions of big bangs that might have taken place? What if the universe was contracting and expanding?
All these were questions that came to my mind until I realized that scientists were already working on this thought of mine...$&;#%#

Saturday, May 1, 2010

An attempt to understand the "Theory of Relativity"

I found this theory very interesting. This was developed by the great "Einstein". While I was reading about it and was trying to understand it... it all sounded very unnatural(if you would!).

Example of the theory:

Assume that you(A) are sitting in car A traveling at 500 miles/hr and one of your friend(B) is in Car B traveling at 1000 miles/hr and another friend(C) is on the ground stationary. Also assume that a light beam passes you all at that instance.