Stars and Galaxies

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Stars and Galaxies

Space Science for Middle School at HCDE

February 20, 2009

Created by the

Lunar and Planetary Institute

For Educational Use Only

LPI is not responsible for the ways

in which this powerpoint may be used or altered.

Slide 2

Welcome!

Please complete the pre-assessment

It’s for us—it’s not about you

Please let us know how much YOU know, not how much your friends sitting next to you know

Slide 3

What are we going to cover?

Our Place in the Universe

The Electromagnetic Spectrum

Classifying Stars

Classifying Galaxies

History of the Universe

Slide 4

First up…

Our Place in the Universe

What is our Universe made of?

How big are things? How far away?

How do we know?

Slide 5

What is our Universe made of?

Stars and planets

Gas and dust

Organized into star clusters

Organized into nebulae

Organized into galaxies

Other things:

Black holes

Dark matter

Dark energy

What was in your drawing?

Image from http://galileo.rice.edu/lib/student_work/astronomy95/orionpleiades.html

Slide 6

Activity!!

Use the Venn diagrams to place the stickers—where does everything go?

After you’re finished, let’s discuss…

Slide 7

Examining the Components

Stars

Gas and dust (Nebulae)

Star clusters

Galaxies

Slide 8

Different types of stars

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Types of Stars

Big

Small

Red

Blue

Yellow

In groups

Alone

More later

Slide 10

What is a “star cluster”?

stars formed together at same time

stars may be gravitationally bound together

two types: open (galactic) and globular

Image at http://hubblesite.org/newscenter/archive/releases/star%20cluster/globular/2007/18/image/a/format/web/results/50/

Slide 11

Open Clusters

dozens to thousands of stars

young stars! only a few million years old