How big is the universe?

Answer 1

There are people who believe the universe is infinite with an infinite number of stars and galaxies. There are some very valid mathematical explanations of why this can't be true. However, as in many other theories of the universe, we simply don't know.
The most distant objects we can see are over 30,000 light years away. Some theories say that the universe is expanding at close to the speed of light, so we can't even conceive of traveling to the edge of the universe to measure it

Answer 2

Astronomers don't know..! We can see the universe out to about 13.7-billion light years, but that's only the *observable* universe. Beyond that 13.7-billion light year mark we have no idea of how much more universe there might be, nor will we ever be able to know. The reason is that shortly after the Big Bang the space of the universe underwent a very brief expansion rate that exceeded the speed of light (..this is allowed because it was *space* that was expanding at that speed, not the stuff in it..) Because of this so-called 'inflation' period, and because light from there can never get back to us, it will always be an immense unknown volume of the universe.

Answer 3

The universe is amazing, incredibly, unbelieveably, unimaginably, inconceivably bigger than huge.

I don't know if anybody knows how big the universe is but some of the Hubble telescope images I've seen have stuff that supposedly millions of light years away.

Answer 4

Hi. The Universe is so large that if you could imagine every grain of sand in the world was a star, the Universe would be thousands of times bigger !
Cheers.

Answer 5

Unimaginable. Don't even try.

Answer 6

" Infinite ".