Exploring the Universe: Galaxies

What is the shape of the Milky Way galaxy?

• Elliptical galaxy

• Irregular galaxy

• Barred spiral galaxy

• Spiral galaxy

How many stars are estimated to be in the Milky Way?

• Roughly 1 trillion stars

• Close to 100 billion stars

• Approximately 200 billion stars

• About 50 million stars

What type of galaxy is the Milky Way classified as?

• Barred spiral galaxy

• Elliptical galaxy

• Irregular galaxy

• Lenticular galaxy

What are the three main shapes of galaxies?

• circular

• spiral, elliptical, irregular

• hexagonal

• triangular

What is the primary component of galaxies?

• Planets

• Comets

• Stars

• Asteroids

What is dark matter and how does it relate to galaxies?

• Dark matter is a visible substance that can be seen with telescopes.

• Dark matter is a form of radiation emitted by stars.

• Dark matter is a type of dark energy that powers galaxies.

• Dark matter is an invisible form of matter that affects galaxies through its gravitational influence.

How many galaxies are estimated to exist in the universe?

• About 100 billion

• Roughly 500 million

• Nearly 5 trillion

• Approximately 2 trillion

What is the closest galaxy to the Milky Way?

• Andromeda Galaxy

• Sombrero Galaxy

• Whirlpool Galaxy

• Triangulum Galaxy

What is the role of supermassive black holes in galaxies?

• Supermassive black holes have no effect on galaxy formation.

• Supermassive black holes help shape galaxies by influencing star formation and dynamics.

• Supermassive black holes are primarily made of dark matter.

• Supermassive black holes only exist in the center of stars.

What are spiral galaxies known for?

• Spiral galaxies are known for their lack of structure.

• Spiral galaxies do not contain any stars.

• Spiral galaxies are known for their spiral arms and active star formation.

• Spiral galaxies are primarily composed of dark matter only.