2007-08-05 01:39:20 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
WELL, YES AND NO...
The things we can see in Outer Space are moving farther and farther apart. Yes that is true.
Is Space expanding? I don't know. But, the things in it are moving farther apart.
The Universe is everything out there all around us. We don't know how big it is, or how far it extends. We do know from what we can see with our most sophisticated optical and radio telescopes that objects can be seen at distances up to 40 Billion Light Years away in all directions from Earth. That is a long, long distance. Is is, however, not the end of Outer Space... It is just the fartherest distance we can SEE with our equipment.
2007-08-05 02:09:22 · answer #1 · answered by zahbudar 6 · 0⤊ 1⤋
The Universe is a finite Entity with a lot of unused space.
The Galaxies of the Universe have been observed as having a recession velocity. That recession velocity observed has been interpretted as Galactic expansion into the Space of the Universe.
As per the Rules of Gravity a mass such as the Earth, which increases, must continually expand its orbit in order to maintain gravitational energy equilibrium.
The same scenario applies to Galaxies as well.
If on the other hand a Galaxy loses mass faster than it gains,it would continually decrease its radius. This is the opposite of expansion = its schrinkage.
2007-08-05 01:54:29 · answer #2 · answered by goring 6 · 0⤊ 2⤋
Yes, the space of the universe is expanding. It's also been shown that the farther away from us some object is the faster it's moving away.
2007-08-05 04:01:06 · answer #3 · answered by Chug-a-Lug 7 · 0⤊ 0⤋
The universe is not infinite so it must have a maximum size.
It can expand to it's maximum size then it must stop expanding.
Space is a quantum entity with a minimum size it can neither expand or shrink.
It has a maximum and minimum density which decreases when it expands when the minimum density is reached it will go out of existence
2007-08-05 02:36:59 · answer #4 · answered by Billy Butthead 7 · 0⤊ 2⤋
by observing distant galaxies it was found that the more distant they are the more redshifted their light is.
this can just be satisfyingly explained by concluding that space itself expands on a large scale.
by trying to explain how it comes that space itself expands scientists 'invented' dark energy causing that. which might link to vacuum fluctuations being observed always and everywhere.
A 'Theory of everything' does not exists till today, but this expansion has to be part of it.
2007-08-05 04:26:24 · answer #5 · answered by blondnirvana 5 · 0⤊ 0⤋
The universe is still moving around.
Scientists have come to the conclusion, formations in the sky that appear blue, are traveling toward earth. Formations that appear red, are movin away. So it is safe to say, without actual proof, that the universe is still expanding.
2007-08-05 01:50:02 · answer #6 · answered by Andrew J 2 · 0⤊ 1⤋
yes, feeble minded one, the universe is ever expanding due to dark matter and dark energy. we know this because except for the andromeda galaxy, all the other galaxies are moving further away and further apart.
2007-08-05 04:35:48 · answer #7 · answered by Sarah F 1 · 0⤊ 0⤋
Yes. The Hubble constant (which, as a time, is 13.7 billion years or so) gives the rate of expansion.
2007-08-05 01:46:12 · answer #8 · answered by Anonymous · 1⤊ 0⤋