You are Here: Home

# How many universes would you need to fit in a googol of salt grains? watch

1. universes are 10bn light years in radius
salt grains average of 1mm cubed
(pm me if you want to know my answer worked out with a prof from southampton uni)

GO........
2. ≈ 39,909,940,000
3. 14.683

Except on Sundays and Bank Holidays.
4. where u get the .683 from??
5. The same place I got the 14 from - thin air.
6. rite
cl
7. just thinking back - it really should be multiverses shouldn't it? i mean 'uni' is singular and my question is asking about multiple things so it should be multiverses! btw no where near yet!
8. I have one complaint with this: the furthest visible light from us is roughly 14 billion light years away in any direction, which would make the universe's radius at least 4bn light years more than in your question.

That said, going with the original question, 2,810,000,000,000 universes should suffice. 1 light year cubed is equal to about 8.46732407 × 10^56 millimeters cubed. A universe of 10bn lightyears in radius, assuming we have a spherical universe, has a volume of about 4.1887902 × 10^30 light years cubed. So one universe would hold about 3.54678441 × 10^87 grains of salt. So, with 1.0 * 10^13 universes we'd have somewhat over three googols worth of salt grains. So, if we have 2.81 × 10^12 universes, that gives us room for 1 googol of salt, with a tiny bit of empty space left over.
9. i just checked the website....

10. Hehe, you're all wrong, if you packed it full, the universe would collapse under its own gravity and so make more room.
11. What poor soul has to go round the beaches picking up sand??
12. Wouldn't it be just one universe though, since nothing exists outside of the universe and if these salt grains took up all of the space in the universe and overflowed, it would still be just one universe, just expanded.
13. Here's a better one: how many grains of salt could you fit in a googol universes?
14. (Original post by Kernel)
Here's a better one: how many grains of salt could you fit in a googol universes?
Quite easily you could say 1. Just because this universe is this big, doesn't mean that any other universe will be as big. Your question is contradictory anyway since you cannot have more than one universe as then they would become multiverses.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: June 25, 2005
The home of Results and Clearing

### 2,475

people online now

### 1,567,000

students helped last year
Today on TSR

Poll
Useful resources

## Articles:

Debate and current affairs forum guidelines