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What is a galaxy primarily composed of?

• Asteroids and comets

• Stars, gas, and dust

• Only stars

• Planets and moons

How do galaxies typically form?

• Through the collision of stars

• From the explosion of supernovae

• From the collapse of gas clouds

• By the merging of planets

What is a key factor in the evolution of galaxies?

• The presence of black holes

• The number of planets

• The interaction with other galaxies

• The size of the central star

Which type of galaxy is known for its spiral arms?

• Lenticular galaxy

• Spiral galaxy

• Irregular galaxy

• Elliptical galaxy

What distinguishes elliptical galaxies from other types?

• Spherical or oval shape

• Bright central bulge

• Lack of a defined shape

• Presence of spiral arms