What are the 3 possible futures for the universe?

What are the 3 possible futures for the universe?

There are basically three possible shapes to the Universe; a flat Universe (Euclidean or zero curvature), a spherical or closed Universe (positive curvature) or a hyperbolic or open Universe (negative curvature). A high mass density Universe has positive curvature, a low mass density Universe has negative curvature.

What are the three possible types of Universe?

We will first consider the three most basic types. There are basically three possible shapes to the Universe; a flat Universe (Euclidean or zero curvature), a spherical or closed Universe (positive curvature) or a hyperbolic or open Universe (negative curvature).

How will an open universe end?

If the Universe holds enough matter, including dark matter, the combined gravitational attraction of everything will gradually halt this expansion and precipitate the ultimate collapse. Over time, galaxies, then individual stars, will smash into each other more frequently, killing off any life on nearby planets.

What are the 4 models of the universe?

See Aristotle’s geocentric universe, Ptolemy’s solar system model, and Copernicus’ heliocentrism. Understand the Ptolemaic, Geocentric, and Heliocentric models. Learn about black holes, their myths and their reality. Learn how black holes form after stars undergo supernovae and create singularities.

What will happen in 22 billion years?

This results in the formation of Milkdromeda (also known as Milkomeda). 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.

What did aristarchus not accept?

Why was Aristarchus of Samos’ model not accepted at the time he proposed it? It was not accepted because at the time it was believed that the earth was at the center of the universe. Describe how Ptolemy adapted Aristotle’s model of the universe into a mathematical one in the Almagest.

Is heliocentric theory correct?

Heliocentric theory is valid for our solar system, but its relevance extends only a few light-years from the sun to the vicinity of the three stars of the Alpha Centauri system (Gliese 551, Gliese 559A, and Gliese 559B).

What will happen to the universe at the end?

During the latter half of the 20th century, cosmologists determined that there were three possible scenarios for the end of the universe, and they all depend on its density. If the density were high enough, then gravity would eventually slow the expansion of the universe and cause it to re-collapse in a “Big Crunch.”

Is the universe in a continuous cycle of expansion?

This could also happen if we see a reversal of dark energy’s current expansion effect. Similar to this theory (and the Big Bang) is the Big Bounce. A sort of symmetry is proposed here: the universe is in a continuous cycle of expanding out and then collapsing onto itself.

What would happen to the universe if the density was right?

But if the density were just right, then the universe’s expansion would very, very gradually slow down, coming to a complete stop only after an infinite amount of time. This third picture is known as a “flat” universe, and would also end in a Big Freeze.

Are We one of many iterations of the universe?

Effectively, we could be one of many iterations of the universe. Perhaps even more eerie to think about is the idea that maybe each time the universe resets, it plays out the same way. Perhaps the you that is currently reading this article right now is just one you out of 10^googleplex versions that existed before.