How universe is created?

How universe is created?

Our universe began with an explosion of space itself – the Big Bang. Starting from extremely high density and temperature, space expanded, the universe cooled, and the simplest elements formed. Gravity gradually drew matter together to form the first stars and the first galaxies.

What happens to the universe after heat death?

However, once the universe reaches heat death, everything everywhere will be the same temperature. That means nothing interesting will ever happen again. In this “Big Freeze”, the universe ends up uniformly cold, dead and empty.

How long will the universe exist?

Assuming that dark energy continues to make the universe expand at an accelerating rate, in about 150 billion years all galaxies outside the Local Supercluster will pass behind the cosmological horizon. It will then be impossible for events in the Local Group to affect other galaxies.

What is the Black Hole Era?

The Black Hole Era is defined as “40 < n < 100”. In this era, according to the book, organized matter will remain only in the form of black holes. Black holes themselves slowly “evaporate” away the matter contained in them, by the quantum mechanical process of Hawking radiation.

What happens to stuff in a black hole?

The singularity at the center of a black hole is the ultimate no man’s land: a place where matter is compressed down to an infinitely tiny point, and all conceptions of time and space completely break down.

Will Big Rip happen?

If −1 < w < 0, the expansion of the universe tends to accelerate, but the dark energy tends to dissipate over time, and the Big Rip does not happen.

Will the universe rip itself apart?

If dark energy remains unchanging, space will expand indefinitely while increasingly isolated stars will slowly fade away and go cold, a phenomenon referred to as Heat Death. And if dark energy keeps accelerating the expansion of the universe, space itself will eventually be torn apart in the Big Rip.