If the rate at which time travels is affected by gravity and the velocity of the observer, how fast would a human percieve time traveling if they were in a void in space far from the gravitational effects of any matter and standing perfectly still? Would they experience time pass by at a greatly accelerated rate? if so how fast would they percieve it elapse?

Time slows down the faster you travel. Living atop a tall building makes you age slower because you're travelling faster as the Earth spins. However, being further from the gravity well of the planet makes time move faster. Granted the changes in time are microscopic but which is the greater effect? Would you age fractionally slower or fractionally faster atop Burj Dubai relative to someone at ground level.

Regardless of whether we travel at the speed of light or not, should our cells not biologically age and decay as per normal? Do we not have an internal biological clock that keeps ticking? Is Einstein proposing that our body will suffer less aging effects when travelling at the speed of light? Someone please help explain this.... 

Hello Scientists

I am currently working on my final school exam paper about Relativity and Astrophysics and these questions came up. Can anyone give me definite answers to them?

1. Is it possible for an Object (excluding light) to travel at the speed of light? Maybe even faster?

2. If an Object theoretically travels at the speed of light, will its length contract infinitely small or will it converge to a certain number? Does the starting length matter?

3. Do Black holes attract one another?

4. Do black holes die? If yes, after how long? What comes next?

5. Do black holes accumulate mass?

6. Is the Universe infinite? If no, what comes after it?

7. What is the biggest Object in the universe?

8. How far can light travel?

9. Could there be other elements in the universe that we don't know of?

10. Are there radiations other than Light/Sound/Radiowaves..Etc that we can't perceive?

Alexander Campbell

Hochalpines Institut Ftan

Ftan, Switzerland.

poolkill@hotmail.com