EARTH SCIENCE

Cosmology

is the study of the universe, including its properties, structure and evolution.

Universe

derived from the Old French word univers, which in turn derives from the Latin word universum

Universe

is all of space and time (spacetime)

Universe

includes planets, moons, minor planets, stars, galaxies, the contents of intergalactic space and all matter and energy.

Universe

sometime called cosmos

sometime called cosmos

Universe

Steady State Theory

Proposed by Hermann Bondi, Thomas Gold, And Sir Fred Hoyle

Steady State Theory

This Theory is based on the perfect cosmological principle.

Steady State Theory

It States that the number of the galaxies in our universe is constant and new galaxies.

Cosmic Inflation Theory

Proposed by Alan Guth,(1980) Andrei Linde, Paul Stein Hart, and Andy Albrecht

Cosmic Inflation Theory

According to this theory, an extraordinary burst of expansion in the very early stages of the universe inflated the size of the cosmos/universe by the factor 10⁵⁰

Big Bang Theory

This theory became the most popular and most-widely accepted theory on the origin of the universe.

Expanding Universe or Red Shift

Light emitted by the star changes as it moves away from the observer.

Expanding Universe

Red Shift

Georges Lemaitre

a Belgian cosmologist & Catholic priest

Georges Lemaitre

stated that the beginning & expansion of the observable universe began with the explosion of a single particle of a definite point in time.

Singularity

A zone of gravitational pressure that is so intense such that finite matter is actually squished into infinite density.

10-43 seconds

PLANCK ERA

10-43 seconds

This is the closest that current Physics can get to the absolute beginning of time.

10-43 seconds

The universe is thought to be incredibly hot, dense, and turbulent, with the very fabric of space and time turned into a roiling morass.

10-35 seconds

GRAND UNIFICATION ERA

10-35 seconds

At the end of which the “superforce” began to break apart into the constituent forces we see today.

Inflationary energy

it triggered a dramatic burst of expansion, expanding the universe from far smaller than subatomic particle to far larger than cosmic volume we can know now about.