To Infinity and Beyond!!!

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Major Structures of the Universe

• Today- Major Structures of the Universe

• Tomorrow- The Big Bang Theory

• Thursday- Galaxies

• Friday- Data

Week at a Glance

Do NowMajor Structures NotesExit Ticket

Today

Every thing that exists, ever existed or ever will exist.

The observable universe is 46 billion light years.

The Universe

• Cleveland

Where are we?

-Orbit stars

-Massive enough to make itself round

-Not massive enough to become a star

-There is an estimated

1 x 1024 planets

-That’s 1,000,000,000,000,000,000,000,000 planets!!!!!

We are on the planet Earth

Planet

Planets, moons, and other objects orbiting a star

Ours is the Solar System

Star System

Large, glowing ball of gas in space, that generates energy through nuclear fusion in its core.

Planets and other objects orbit them to form star systems.

There is an estimated 1022 to 1024 stars in the universe.

Our star is the Sun.

Star

A huge group of individual stars, star systems, star clusters, dust, and gas bound together by gravity.

There is an estimated 100-200 galaxies in the universe.

Ours is the Milky Way Galaxy.

Galaxy

They are pretty much the same thing, except groups are smaller.

They are collections of galaxies.

Groups (usually) have no more than 50 galaxies.

Clusters have more galaxies.

We are in the Local Group.

Groups and Clusters

Very large collections of clusters and groups.

Ours is the Local Supercluster.

Superclusters

Everything that exists, ever existed or ever will exist.

There’s only one and EVERYTHING is in it!

The Universe

SuperclusterGalaxyPlanet

Solar SystemCluster

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