So.... if the universe is expanding is our world getting smaller cause we will be alone or it actually getting bigger?
2007-09-18 05:41:21 · 6 answers · asked by Lord NeXuS M00N 3 in Science & Mathematics ➔ Astronomy & Space
No, our world is getting neither smaller nor larger due to expansion of the Universe.
Our size (Earth's) will remain basically unchanged.
According to Einstein's theory of relativity, nothing can move faster than the speed of light, although he DID predict gravitational lensing, ( light can be amplified and re- focussed, even from the most distant objects).
Light from a very distant 'baby galaxy' has been determined to have originated some 13.4 billion years' distant, gauging from the light's redshift. This 'baby galaxy' is receeding from us (and everything else) at a rate of ~ 150,000 miles/sec, or 80% the speed of light.
2007-09-18 06:24:18 · answer #1 · answered by Bobby 6 · 0⤊ 0⤋
Scientist have observed the motion of Galaxies in the Universe and concluded that all the mass structures in the Universe are dissipating at recession velocities which are even exceeding the Speed of light without violating special relativity.
If that is the Case ,it means that the mass Density of the universe decreasing at that rate will eventually reach a lower level than the density of gas to the point that the density of the Universe in time will approach zero at a velocity faster than the Speed of light.
Note; The milky way is also a Galaxy and the Earth lives inside the milky way and we live on the Earth.
2007-09-18 05:54:29 · answer #2 · answered by goring 6 · 0⤊ 2⤋
Neither. The planet will more or less retain it's current size and shape for the next five billion years.
Then the sun will expand out to the asteroid belt.
2007-09-18 05:49:31 · answer #3 · answered by Darkwolf 5 · 1⤊ 0⤋
The size of the Earth has no relationship to the theorized expansion of the universe.
2007-09-18 05:53:29 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Our world stays the same.
Other galaxies just get farther away.
2007-09-18 05:48:53 · answer #5 · answered by Anonymous · 1⤊ 0⤋
it stays the same
2007-09-18 07:30:04 · answer #6 · answered by Anonymous · 0⤊ 0⤋