Yes, the universe expand.
the universe can not be everything because there has to be space for it to expand into
It began to expand in size. There is a hole at that point in our knowledge of the early universe but without a doubt the universe began to expand.
They don't expand. There just leftover from the explosion of the universe.
It will continue to expand
it keeps on expanding
The expansion or contraction of the universe is determined by the balance between the force of gravity (tending to pull matter together) and the force of expansion due to dark energy (driving matter apart). If dark energy dominates, the universe will expand; if gravity dominates, the universe will contract.
The universe simply cant expand at 0 acceleration.
Mathematically, it's called an "open" universe. As best we can tell as of now, our Universe is open.
The universe expands 45 miles every second.
It will expand more rapidly.
Do you have a specific scientist in mind??
According to scientists the universe continues to expand as a result of the initial big bang.