What if our universe is inside 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.

Will black holes destroy the universe?

After 1040 years, black holes will dominate the universe. They will slowly evaporate via Hawking radiation. A black hole with a mass of around 1 M ☉ will vanish in around 2×1066 years. As the lifetime of a black hole is proportional to the cube of its mass, more massive black holes take longer to decay.

Why is the total mass of the universe not conserved?

So, the total mass of the Universe need not be conserved even though the total energy (taking into account the energy that is equivalent of the mass in the Universe) is conserved. Mass and energy are related by the famous equation E=mc 2.

Why didn’t all this matter immediately collapse into a black hole?

According to the big bang theory, all the matter in the universe erupted from a singularity. Why didn’t all this matter–cheek by jowl as it was–immediately collapse into a black hole? – Scientific American. According to the big bang theory, all the matter in the universe erupted from a singularity.

Why does the universe expand and collapse?

The basic point is that the universe was born with a tendency to expand, which overcame the tendency of matter to collapse. According to relativity theory, space does not like to remain static; for all but the most special cases, it either expands or contracts. But why it initially chose the former is still a mystery.

Is the universe a result of a vacuum fluctuation?

In 1973, Edward Tyron proposed that the Universe is a result of a vacuum fluctuation. The main difficulty of this proposal is that the probability that a 13.7 billion year old Universe could arise from this mechanism is extremely small.