Exploring Our Origins

The Big Bang

Birth of the universe

Birth of stars

Agrregation of stars forming galaxies

Creation of milky way

DNA

Genes

Chromosomes

Responsible for our traits

Encoding for proteins and traits

Heredity

Evolution

Natural Selection

Variation

Mutation

Survival of the fittest

Stars (our parents)

Formed of hydrogen and helium

Have a definite lifecycle

Nuclear reactions happemimg inside forming light and heat energy

When dying they explode forming complicated elements of life

Great explosions cause light and heat called supernova

On dying they form atoms that become parts of other nebula that form other stars forming galaxies.

Solar System

Formed 4.5 billion years ago

Formed of the sun and the 8 planets+pluto

Found inside milky way

Earth

Formed with the solar system 4.5 billion years ago

Life was impssible on early earth

Explosion and the atmosphere filled with poisnous gases

Elemnts of life were delivered to earth from outer space

Water was formed from volcanic sprays and comets from space

Unicelleluar organisms were formed which evolved into multicellilular organisms then humans

Origins of Life

Amino acids which are building units of proteins

DNA and RNA

Carbon, Hydrogen, and Helium