We dont really know the mass or the radius of the Universe do we?

Question

Note Einstein alluded to a Finite Universe=How did he know?whos is he to say?

could Einstein have been wrong and the infinity guys right?

Answer 1

There is disagreement over whether the universe is indeed finite or infinite in spatial extent.

However, the observable universe, consisting of all locations that could have affected us since the Big Bang given the finite speed of light, is certainly finite. The edge of the cosmic light horizon is 15.8 billion light years distant.[4] The present distance (comoving distance) to the edge of the observable universe is larger, due to the ever increasing rate at which the universe has been expanding; it is estimated to be about 78 billion light years[5] (7.8 × 10^10 light years, or 7.4 × 10^26 m). This would make the volume, of the known universe, equal to 1.9 × 10^33 cubic light years (assuming this region is perfectly spherical). As of 2006, the observable universe is thought to contain about 7 × 10^22 stars, organized in about 100 billion (10^11) galaxies, which themselves form clusters and superclusters. The number of galaxies may be even larger, based on the Hubble Deep Field observed with the Hubble Space Telescope. The Hubble Space Telescope discovered galaxies such as Abell 1835 IR1916, which are over 13 billion light years from Earth.

Both popular and professional research articles in cosmology often use the term "universe" when they really mean "observable universe". This is because unobservable physical phenomena are scientifically irrelevant; that is, they cannot affect any events that we can perceive.

Answer 2

Here's the straight skinny:

"As counterintuitive as it may seem, the universe has no center, and it has no boundary.

The idea of a Big Bang acting like a giant fireworks explosion hurtling matter and energy outward is pervasive but misleading. As bizarre as it sounds, it wasn't "stuff" that exploded outward, it was space itself! In essence, the Big Bang happened everywhere. Since the time of Einstein it has been known that space is not simply a backdrop in which we move, but an actual thing that can be measured. It has shape, it can be bent, and it can expand.

If this sounds nonsensical, think of the surface of a balloon expanding into three-dimensional space. A two-dimensional creature confined to the surface of the balloon could never find the center, because the center is located in 3-D space, and not in the 2-D space in which the creature lives. We are 3-D creatures stuck in a universe with at least four dimensions, so we cannot see the center of our universe. In fact, there's no reason why there has to even be a center anywhere.

The same reasoning holds true for the "edge" of the universe. Where is the edge of a balloon? To define an edge (or a center), you need to assume that there is something into which the universe expands. As I just explained above, that need not be true, and even if it is, we can never detect this "metaverse."" [See source.]

For more on this universe size, shape, and so on, I recommend "The Elegant Universe," by Brian Greene. It's easy and fun reading full of examples even us 4 dimensional creatures can understand.

Answer 3

actually based on current scientific knowledge, the universe is expanding so obviously we don really know the radius of the universe and hence we can not estimate the mass either. Of course new mathematics has been discovered/worked-out that is trying to give us an idea of the radius of the universe and the rate with which it is expanding. Nothing conclusive yet but it's exciting news.

Answer 4

If you really want to know the mass and radius of the universe... just go with infinity, because the universe is infinite!

Answer 5

In the Land of Oden in Norse Mythology exists The Rock of Oden.
It is 100 miles long, wide and high.
Once every 100 years a little bird sharpens his beak on this rock.
When the rock has thus been worn away will be a single moment of Eternity.

Answer 6

Mass .. nope ..... and it really doesn't have a radius because it isn't round. As far as the math tells us the universe is sort of shaped like a saddle .... sort of.

Answer 7

New finding's imply that the universe is about 15.8 billion years old and about 180 billion light-years wide.

Answer 8

WE HAVE NO IDEA ABOUT IT BUT THEY SAY RECIPROCAL OF THE HUBBLE'S CONSTANT GIVES US A RELATION WITH THE TIME THE UNIVERSE WAS FORMED AND
FROM IT WE CAN COMPUTE DISTANCE AND FIND OUT THE VELOCITY WITH WHICH IT IS EXPANDING

Answer 9

Nope.

Answer 10

In a word: No.


Doug