What is there outside our universe?

The universe, being all there is, is infinitely big and has no edge, so there’s no outside to even talk about. The current width of the observable universe is about 90 billion light-years. And presumably, beyond that boundary, there’s a bunch of other random stars and galaxies.

Can our universe be in a black hole?

The birth of our universe may have come from a black hole. Most experts agree that the universe started as an infinitely hot and dense point called a singularity. It is, in fact, and some physicists say they could be one and the same: The singularity in every black hole might give birth to a baby universe.

Does a perfect vacuum exist?

A vacuum is defined as a space devoid of all matter. Ultimately, a perfect vacuum isn’t possible because quantum theory dictates that energy fluctuations known as ‘virtual particles’ are constantly popping in and out of existence, even in ’empty’ space.

Could there be life in another universe?

Maybe in another universe, the force of gravity is repulsive, or green, or spawns unicorns. In the vast majority of those universes, no life could ever form, but roll the dice an infinite number of times and you’ll eventually get the conditions for life.

Is our cosmos just one universe in a vast multiverse?

One of the super interesting and definitely way out there ideas is that our cosmos to actually just one universe in a vast multiverse. Each universe is sort of like a soap bubble embedded in the cosmic void of the multiverse, expanding from its own Big Bang.

Is our universe colliding with other universes?

In other words, we could look out into space and see a cosmic bruise, and know that’s where our universe is colliding with another one. Well, have astronomers looked out into space, in search of some sign that our Universe is interacting with other universes?

Is the universe a subatomic particle?

In general, our universe does not seem to behave like a subatomic particle…so it’s probably not…but then again, we cannot see our universe “from the outside”.