raw_thought wrote:Both physics and astronomers agree that it is not the galaxies that are moving, it is that the space between them is expanding.
How does space expand? Does it just spread itself out a bit or do you new bits of space get made to fill in the gaps?
How come space expands between some galaxies and not between others?
Is the space between here and Pluto expanding at the same rate as the space between here and the sun?
When you stand at the roadside and watch a car drive away from you does the space between you and the car expand or is the car just driving away from you. Does the space contract again when the car turns around and drives back.
What does space expand onto?
Why do you need to insist that the universe is expanding at all when exactly the same observations can be explained simply by saying the the universe is merely aging, just like everything within it. On the grounds of Occam economy why would this explanation not be preferred?
SR claims that if you had a spaceship that could travel at almost the speed of light then you could traverse the entire universe in a single lifetime because it would shrink to a manageable size for you. Do you believe this to be true?