Graduation Requirements
Science Earth and Space
Equipment/Materials Needed

No special equipment or materials are required

milky way
Billions of stars, together with gas and dust, held together by gravitational attraction.

Badge Completion Requirements

Introduction to Galaxies

NASA has estimated that there may be as many as two trillion galaxies.

Please review the following:

The classification system is known as the Hubble Sequence divides galaxies into three main classes with a few variations. Today, galaxies are divided into four main groups: spiral, barred spiral, elliptical, and irregular.

Spiral Galaxy:


Barred Spiral Galaxy:

barred spiral

Elliptical Galaxy


Irregular Galaxy



What is the shape of the galaxy that we live in?

Explain how a galaxy develops a flat formation

Discuss the collision of two galaxies

Discuss how the Milky Way is in the process of consuming a smaller galaxy

Please develop and submit a presentation demonstrating your understanding of galaxies. Please include the above "prompts" in your presentation.

Milky Way Galaxy

The Milky Way is the galaxy that contains our Solar System. The name describes the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.

The Milky Way is the Galaxy in which we live. It is a spiral-shaped galaxy that contains several hundred billion stars, including our Sun. It is about 100,000 light-years across and about 10,000 light-years thick.

For many years scientists have studied our own solar system. But until the last few years, we knew of no other solar systems. This may seem surprising, as the Sun is one of about 200 billion stars (or perhaps more) just in the Milky Way galaxy alone. So far, astronomers have found more than 500 solar systems and are discovering new ones every year. Given how many they have found in our own neighborhood of the Milky Way galaxy, scientists estimate that there may be tens of billions of solar systems in our galaxy, perhaps even as many as 100 billion.



Milky Way

Please review the following material:




Explain how our galaxy got its name: The Milky Way

Explain the shape of the Milky Way and where Earth and our Solar System is found

Discuss where stars are born in the Galaxy

How many arms does the Milky Way have?

Explain the role of the black hole at the center of the Galaxy

Please develop and submit a presentation demonstrating your understanding of Milky Way galaxy. Please include the above "prompts" in your presentation.