How large is space?
Observationally, there is no indication of an end to the size of our Universe. But the observable universe grows by a light-year every year as light from further away has time to reach us.
So every year we can observe more objects which were previously beyond our cosmic horizon.
However there is no indication of an upper bound, i.e. there is no indication or sign that says 'Space Ends Here!' There is
the possibility of Universes beyond our Universe.
The imaginary spaceman of the future sets out on his mission to find a boundary to space but there is no boundary; he space travels for billions of years and yet does not come up against a 'wall' which says 'space ends here'.
I don't know about you but the whole thing make me feel slightly
nauseous.
The imaginary spaceman of the future sets out on his mission to find a boundary to space but there is no boundary; he space travels for billions of years and yet does not come up against a 'wall' which says 'space ends here'.
I don't know about you but the whole thing make me feel slightly
nauseous.
Source: Max Tegmark
It is now widely accepted by physicists that Space beyond our observable Universe teems with galaxies, stars and planets. Billions and billions of them.
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