Transcript BIG BANG - EHallRocks

A Super-short Extra-brief
History of the Universe
BIG BANG

≈14 billion years ago

An unbelievably enormous explosion that
generated all space, time, matter, and energy.
Post-Inflation High Energy

Seconds after BB

Forces like gravity and basic particles like
protons, neutrons, and electrons form.
Elements Form


3 minutes after BB
Particles combine to form basic elements such
as Hydrogen and Helium, still the most
abundant elements in the big U.
Hot & Cold (The World is a Gas)

300,000 to 500,000 years after the BB

As the giant gas cloud cools, electrons join
the atoms of H and He. Photons rush
outward. These are seen today as cosmic
microwave radiation.
Galaxies and Stars are Born

1,000,000,000 years after the BB (yup, that’s a
billion years)

The U continues to expand. Pockets of gas
become dense and stars are ignited. Groups of
stars form the earliest galaxies.
Era of Quasars

3,000,000,000 years after the BB

Some smaller galaxies combine into larger
ones shaped like eggs or spirals. Some
collisions are so great that they collapsed
into black holes. Gases being drawn into
these black holes became so hot it
glowed, which can still be seen today.
Supernova

6,000,000,000 years after the BB

Some stars are born. Others die. Some
dead stars explode violently spewing
common elements like oxygen, carbon,
nitrogen, and iron all around the U.
Our Sun is born

5,000,000,000 years ago or about 8 billion
years after the BB

A cloud of gas in one of the spiral arms of
the Milky Way Galaxy forms a medium
sized star we know as our Sun. A disk of
dust and debris surrounding the sun
coalesces into planets, asteroids, moons,
and comets.
Terrestrial Planets Form / Gas
Giants Form

4,560,000,000 years ago

Inner planets Mercury, Venus, Earth, and
Mars form in the hot inner solar system.
Outer planets Jupiter, Saturn, Uranus, and
Neptune form in the cooler outer solar
system.
Our Moon forms


4,500,000,000 years ago
A Mars-sized planet hits Earth sending debris
into orbit. This material eventually combines
to form our moon.
Earth’s Atmosphere and Oceans

4,200,000,000 years ago

Volcanoes spew hot gases onto Earth’s
surface. These gases cool into our
atmosphere and water condenses into
Oceans.
Earliest Possible Evidence for Life
(tiny, simple things not like you)

3,800,000,000 years ago

Scientists are looking at and debating
fossil evidence and chemical evidence
indicating life began around this time.
Earth’s Oxygen-“Rich” Atmosphere
develops

3,500,000,000 years ago

Phirst Photosynthesizers begin pumping
Oxygen into the atmosphere.
First Ice Age (No not the movie,
still way before that.)

2,500,000,000 years
ago

Lots of stuff froze.
Ozone Shield forms

2,200,000,000 years ago

Some Oxygen (O2) converts into Ozone
(O3) protecting Earth from harmful UV
rays.
Early Multi-cellular Critters Form

600,000,000 years ago

Funky looking jellyfish like creatures left
imprints we find today.
First Land-based Plant Life

430,000,000 years ago

These were moss like plants that took over
the land from the bacteria and slimes that
preceded them.
Pangaea

250,000,000 years ago

The continents are all combined into one
giant land mass. This later splits to form
the current continents via sea-floor
spreading.
First Dinosaurs

230,000,000 years ago

Small bi-pedal carnivores.
First Homo-Sapiens (that would be early humans
from whom you and I descended)


150,000 to 200,000 years ago
Despite his advanced age, there is no
evidence that Mr. Weinenger was among
these early people. You may want to
ask him just to be sure.