Why is space expanding?
How and why is space is expanding?
If the universe is expanding then where does the extra space come from? Is there space outside this universe? Has space have any end? Does space ever end? Could the acceleration of the expansion of the Universe come from the fact that density is what is hindering creation of space? What if the universe isn't expanding but matter is all shrinking? Scientists say that the universe is expanding, and all the galaxies are moving away from one another. How can they be sure that this is due to expansion and not shrinking of all the matter everywhere in the same ratio? Scientists are saying that our universe is expanding with increasing speed, from where this energy is coming? How does the expansion of the universe create new space-time? If the universe is expanding, is there a centre point which remains fixed? If space expands, it releases stored up gravitational potential energy, which converts into the intrinsic energy that fills the newly created volume? How will the universe expand forever? Our universe is a sphere, but what direction are we expanding in? Are all galaxies moving away from us or are they moving in some specific direction? Does the universe need energy to expand? If the universe is expanding, why is the Earth moving towards the Sun? As space expands, it releases stored up gravitational potential energy, which converts into the intrinsic energy that fills the newly created volume? What will happen when the universe stops expanding? Is universe expanding because there is potential energy that transforms into kinetic energy all the time? Will the universe expand forever? Is space time infinite? What happens if we go up in space? Does the universe have a limit to its expansion? Could outer space itself have a space? Is it possible for us to colonize space? How feasible is space travel? Is the universe expanding more than the speed of light? If yes then doesn't it break the cosmic limit? Why does the entropy keep growing when the universe is shrinking? Does 'empty' space have mass which is displaced by matter? What will happen if the universe stopped expanding? Is there a limit for the expansion of the Universe? Is spacetime a field? Why has the international space station not grown exponentially over the years?