What are the dominant conditions that determine the fate of the universe?

Notably, the ultimate fate of the universe depends on three things: the universe’s overall shape, its density, and the amount of dark energy that exists. The first two scenarios hinge upon the universe existing in a “flat” or “open” system (one that is negatively curved, similar to the surface of a saddle).

How long did it take for the universe to form?

Over billions of years, gravity caused gas and dust to form galaxies, stars , planets, and more. The matter that spread out from the Big Bang developed into everything in the universe, including you. You are made of star stuff! Astronomers have figured out that the universe is about 13 billion years old.

How the universe was formed step by step?

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 is the fate of the universe will the universe continue to expand or will it eventually contract?

If the gravity within the universe is strong enough, it could reign in the expansion and cause the universe to contract. If not, the universe will continue to expand forever. If omega (Ω) is greater than 1, then the universe will be closed. If it’s less than 1, the universe will be open.

What are the possible fates of the universe?

There’s three possible fates for the universe, one is called the Big Crunch, where gravity takes over and begins to pull the cosmos back, compressing to one point. Another extreme is the Big Rip, where the expansion of the universe just gets faster until galaxies, stars, planets, atoms and space itself is ripped apart.

How long ago did the Earth form?

about 4.5 billion years ago
Formation. When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun.

How many years has it been since the Earth was created?

4.5 billion years
Such constant change has characterized Earth since its beginning some 4.5 billion years ago. From the outset, heat and gravity shaped the evolution of the planet.

What are the two major stages of the universe evolution?

Therefore, nature also evolves in a certain way. And the nature of the universe is such that it underwent several stages of evolution, if you will, over its lifetime. These major stages – the radiation era, recombination epoch, and reionization – will be covered right now.

How long would the Big Crunch take?

Linde and his colleagues calculate that the typical time for the Universe to start this collapse would be in 10 to 20 billion years from now. Its current age is about 14 billion years. “This was the greatest surprise,” says Linde.

How long will the Universe last?

22 billion years in the future is the earliest possible end of the Universe in the Big Rip scenario, assuming a model of dark energy with w = −1.5. False vacuum decay may occur in 20 to 30 billion years if the Higgs field is metastable.