Galaxy and Universe

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What is the name of our star system?

Solar System

Can you identify the four galaxy shapes (spiral, barred spiral, elliptical, and irregular)?

Don't look below this until after you've made your predictions for what type of galaxy each picture is (under this is the answer key) Top left corner=elliptical Bottom left corner=spiral Top right corner=irregular Bottom right corner=barred spiral

What is the name for a celestial body that consists of a huge group of individual stars, star systems, star clusters, and dust and gas bound together by gravity?

Galaxy

What is the name of our galaxy? It has 200 to 400 billion stars

Milky Way

What is the name of our galaxy group? It is a cluster of about 45 to 50 galaxies bound together by gravity including the Milky Way.

The Local Group

What is the name of our galactic arm?

The Orion Arm

Scientists classify galaxies in different __________

catalogs

The stars in the galaxies are broken into _________ main parts.

four

Galaxies are identified by ________ & _________

letters & numbers

There are _________ main types of galaxies.

three


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