Galactic Evolution and Fossils Quiz

What is the main feature at the center of the galaxy NGC 4945?

• A large nebula

• A massive asteroid belt

• A giant star

• A supermassive black hole

What phase is NGC 4945 currently in, characterized by the birth of many stars?

• Nebula phase

• Starburst phase

• Quasar phase

• Red giant phase

What did the x-ray observations reveal about NGC 4945?

• A cloud of cold gas

• A new planet

• A supernova explosion

• A new galaxy

What is the cold gas in NGC 4945 thought to be a fossil of?

• A meteor impact

• A star collision

• A supernova

• A black hole eruption

Why is studying galactic evolution challenging?

• It occurs over long time scales

• Galaxies are constantly moving

• It requires advanced technology

• Galaxies are too far away