Is our universe a closed system?
The universe itself is a closed system, so the total amount of energy in existence has always been the same. The forms that energy takes, however, are constantly changing.
Is the universe flat or open?
The exact shape is still a matter of debate in physical cosmology, but experimental data from various independent sources (WMAP, BOOMERanG, and Planck for example) confirm that the universe is flat with only a 0.4% margin of error.
What would happen if the universe was closed?
Astronomers think a closed universe will behave in much the same way. Its expansion will slow down until it reaches a maximum size. Then it will recoil, collapsing back on itself. As it does, the universe will become denser and hotter until it ends in an infinitely hot, infinitely dense singularity.
- Is our universe a closed system?
- Is the universe flat or open?
- What would happen if the universe was closed?
- What is beyond our universe?
- What are 3 ways the universe could end?
- How would the universe end?
- What is bigger than the universe?
- Can the universe be reborn?
- Will the Big Rip happen?
- Why is the Big Rip not possible?
- Will the universe freeze?
- Is the universe infinite?
- How cold is space?
- Does space ever end?
- What created the universe?
- Who created God?
- What was there before the universe?
- How many universes are there?
- Can we travel to another galaxy?
- Do Multiverses exist?