I am confused, how the motion of the planets we observing is circular?
The motion of the every object in Spacetime is straight, but as we are watching it in 3D, it seems to be circular. What is the reason behind it?
In simple words, how the straight motion of the objects in 4D(spacetime)...
Yeah that's right about gravitational potential...my basic question was why time variable remains unchanged as expansion of universe continues...the thing I am not getting is that during big bang what would have value of this variable and what it will be at the end of expansion, if we consider...
But if we look mathematically wavelength, frequency and time relationship...anyway it is also getting applied to all the universe combinedly (as you said) then, time comes into picture...we cannot neglect it...
Time variable of space-time at the end of universe...
As universe is continuously expanding at the accelerating speed...expansion of the universe causes Redshift...the whole universe is made up of the tiny particles and the material. Because of this all the material particles of the universe...
friends first and second replies was expected...
the thing is, if I would have not know how to use google then probably I would have not physics forum and what parallel universe...so don't tell me that...anyway I was asking some specific things...