The Milky Way

Front

How long does our Sun take to orbit the Milky Way galaxy?

Back

about 250 million years

Front

What are the 'spherical balls of stars' that helped determine that the Sun isn't at the center of the Milky Way?

Back

globular clusters

Front

What is the mass of the black hole at the center of our galaxy?

Back

4 million times the mass of the Sun

Front

What is the name of the smaller arm where our Sun is located?

Back

the Orion Arm

Front

What is the name of our galaxy?

Back

the Milky Way Galaxy

Front

What is the shape of the Milky Way galaxy?

Back

a vast, flat, disk-shaped collection of gas, dust, and stars

Front

What is the approximate number of stars in the Milky Way galaxy?

Back

about 100 to 400 billion stars

Front

What is the term for the center of the Milky Way galaxy?

Back

the Galactic Center

Front

What type of galaxy is the Milky Way classified as?

Back

a barred spiral galaxy

Front

What is the significance of the Orion Arm in the Milky Way?

Back

It is where our solar system is located.