Recent content by revelation101

thanks.

Is there any experimental proof for existence of dark energy and antigravity?

Ok.But in the question i mean the revolution of planets around the sun, not the rotation of planets

can Earth revolve around the sun without rotating itself? why some planets revolve clockwise and some other anticlockwise? what decides this direction?

there may be dark energy and dark matter,but not antigravity:wink:

a small question,if i take a cube of any material,remove some of its molecules somehow,and keep it in vacuum under zero gravity,will the cube crumble into a pile after some years?does that mean work is done without input of energy?

second law states that a process occurs towards the direction where its entropy increases.it is when you start the process.in the case of building you stated here,it is stable.if you try to unstabilize it ,it will result in the destruction of the building,thus increasing its disorderness or...

is there any experimental evidence to the presence of dark energy or dark matter?or just it is only a mathematical outcome?

hi if gravity is a force of attraction ,a natural question arises ,why it can't be repulsive?as there is a great symmetry in the structure of universe,i think we cannot take the case of attraction for granted.And with this reasoning, for surely gravity must not be a force but something...