Illusion of time

Stephen hawkings , A brief history of time , is indeed a wonderful book , and i guess a must read for every physics fan. It really does a great job in explaining the scientific theories about the universe, and about the concept of origin of time. It also raises questions about existence of God, and where the universe is heading too. I have jotted some of the interesting points from the book here.

“Each individual has his own personal measure of time, that depends where he is and how he is moving“

“From a pair of twins, if one is living on top of a mountain and other at sea level, the one at the height will grow old faster than the one at the bottom “

“The universe is growing constantly, with time and equally in all directions. The force of expansion is just higher than the gravitational force, else it would contract itself and  get shrunk ed  “”

“If an astronaut falls into a black hole , its mass will increase , but the energy equivalent of that mass will be returned to the universe in the form of radiation. In a sence the astronaut will be recycled . “