2006-08-23 08:26:40 · 15 answers · asked by sabi 2 in Science & Mathematics ➔ Astronomy & Space
it's unknown... and it would be close to impossible to measure
2006-08-23 08:30:09 · answer #1 · answered by Ellen N 4 · 0⤊ 0⤋
Let's do the sum:
Visible universe is about 30 billion lt years wide
That is 3 x 10^10 light years.
Let's do metric, it's easier
1 lt yr = 10^13 kilometers (same as 6 x 10^12 miles)
Therefore, width of universe in kms is
3 x 10^10 x 10^13 kms
= 3 x 10^23 kms (that's 3 followed by 23 zeroes)
But that is just linear. To get the volume:
Let's assume it is spherical. rather than use the equation for a sphere, let's use the fact that a sphere is about half the volume of a cube of the same width. Then we just need to cube the width of the universe and halve that.
Volume of a cube universe = 3 x 10^23 x 3 x 10^23 x 3 x 10^23
= 9 x 10^69.
halve that
Volume of universe = 4.5 x 10^69 cubic kilometers
That's 4 followed by 69 digits. A heck of a lot of space. A number way beyond imagination.
2006-08-23 16:23:11 · answer #2 · answered by nick s 6 · 0⤊ 0⤋
The Einstein General Relativity Theory gives an aproach of what you're asking for:
The universe being an sphere whose radio R can be calculated by:
R^2=1'08*10^27*1/Ï where Ï is the average density of mater in cgs units.
The point here is the value for Ï. It's known that is very near to zero but no definite value is known. In fact the differents values for Ï establish the types of universe we would have.
2006-08-23 16:50:57 · answer #3 · answered by alexander 1 · 0⤊ 0⤋
The volume is 99 megazillion kilolitres and the weight is a begazillion tonnes squared.
What are you talking about? No one even knows how many celestial objects are in the universe, not the extent of it, so how can anyone even estimate the volume and weight?
2006-08-23 15:34:48 · answer #4 · answered by old lady 7 · 0⤊ 0⤋
There is only one possible answer to that question..."I don't know." We have no idea how much there is out there. All we keep finding is just more and more. Another thing, are you looking for weight relative to our earth measurements? For example, a man weighs less on the surface of our moon, than he would on the surface of the earth, because the gravity of the earth is greater.
2006-08-23 15:36:32 · answer #5 · answered by Silvax 3 · 0⤊ 0⤋
Sigh - let me guess. You're building a giant scale and want to be sure it's up to industry standards?
Since both the size and weight of the universe is generally acclaimed infinite, I would go with - infinite!
So, seriously, what do I win?
2006-08-23 17:55:03 · answer #6 · answered by mattias carlsson 5 · 0⤊ 0⤋
The universe is exactly 1 universe in volume and weighs exactly 1 universe (give or take one universe)
2006-08-23 15:34:45 · answer #7 · answered by BA Barakas 2 · 0⤊ 0⤋
the volume is at least (12 billion light years)cubed. The mass is something like 10^80 grams
2006-08-27 09:32:15 · answer #8 · answered by kemchan2 4 · 0⤊ 0⤋
The universal horizon is ~14 billion light years away. What is beyond that is antibody's guess.
2006-08-23 16:00:56 · answer #9 · answered by Scott S 4 · 0⤊ 0⤋
The volume is infinite, and the "weight" is zero.
2006-08-23 16:07:50 · answer #10 · answered by Anonymous · 0⤊ 0⤋
Our universe is infinite, which means it has no boundary or edge. It goes on for ever.
2006-08-23 15:31:37 · answer #11 · answered by Kevin H 7 · 0⤊ 0⤋