Is space itself expanding or is it just matter within the universe that is expanding?

Answer 1

How would u measure nothing expanding.

Answer 2

Volume is a Quality of Matter, and Space is just a word for the Void with Low Density of Matter.

So your Question is basically comes down to:
Is it A or the other A that is Expanding?

Chicken or the Egg?

Answer 3

Space itself is expanding, so the matter comes along for the ride.

Answer 4

The universe itself is expanding at a rate of 70 (+/-)2 km/sec per megaparsec in all 4(pi) steradians directions. The rate of expansion is increasing.

Science 315 59 (2007)

Answer 5

All that all of us understand is "area is increasing". As for the universe, we don't understand whether it rather is increasing. of direction, if the universe is spatially finite (there's a cut back in its length), then the universe itself could could be increasing besides. There would not could desire to be partitions. evaluate the Earth's floor as a 2-dimensional merchandise. it rather is finite in length, yet there are not any "partitions" (you are able to start up off in any course and pass on continuously -- you will only keep passing persistently your beginning factor). Now, think of that, for some reason, the quantity of Earth replaced into increasing. the exterior could additionally boost besides (distance could get extra advantageous) and yet, there are not any partitions to push back. in actuality, so a techniques as a 2-Dimensional being on the exterior understands, there continues to be no "exterior" into which the exterior could improve. strengthen this to a three-D universe. --- even in spite of the incontrovertible fact that, a extra convenient clarification is that the universe could desire to be infinite. hence, there could consistently be a great number of area for area to boost, while not having to boost into something new (no longer even in bigger dimensions). Analogy: evaluate the line of numbers ... -3, -2, -one million, 0, one million, 2, 3... it rather is infinite in length. there is not any "wall" (no "final style" to mark the tip of the line). the gap between 2 numbers is only the adaptation between them (as an example, the gap between 7 and four is 7-4 = 3) SImulate expansion via multiplying each and each of the numbers via 10 ... -30, -20, -10, 0, 10, 20, 30 you have unexpectedly multiplied each and each of the gap via afactor of ten. you have made each and each of the numbers ten circumstances extra advantageous. have you ever prolonged the line? Did you create new numbers that did no longer exist earlier? Did you push some "final style" ten circumstances further out? No. even in spite of the incontrovertible fact that the line replaced into multiplied via area of 10, the completed length of the line has no longer replaced. that's the problematical element approximately infinities. If the universe is infinite, then you definately can boost area all you pick, it is going to consistently in good shape.

Answer 6

space is expanding.

Answer 7

DXistances between the galaxies are increasing.