Exploring the Hubble Sequence

Who invented the Hubble Sequence?

• Isaac Newton

• Albert Einstein

• Galileo Galilei

• Edwin Hubble

What are the two main groups in the Hubble Sequence?

• Barred and Regular

• Lenticular and Irregular

• Circular and Irregular

• Elliptical and Spiral

How are elliptical galaxies numbered?

• Based on their age

• Based on their size

• Based on their color

• Based on how round or flattened they are

What type of galaxy is an intermediate phase between spiral and elliptical galaxies?

• Lenticular

• Irregular

• Regular Spiral

• Barred Spiral

What distinguishes regular spiral galaxies from barred spiral galaxies?

• The color of the stars

• The presence of a central bar

• The number of arms

• The amount of interstellar gas

How are spiral galaxies classified in the Hubble Sequence?

• By their size

• By their age

• By the tightness of their arms

• By their color

What type of galaxies fall under no ordinary class in the Hubble Sequence?

• Spiral

• Lenticular

• Irregular

• Elliptical

What is a common misconception about the Hubble Sequence?

• It classifies galaxies by their color

• It was created by Albert Einstein

• It includes only elliptical galaxies

• It represents a model of galactic evolution

According to research, which galaxies were most common in the early universe?

• Lenticular

• Spiral and Irregular

• Elliptical

• Barred Spiral

What is the purpose of the Hubble Sequence?

• To classify galaxies based on their size

• To classify galaxies based on their color

• To classify galaxies based on their shape

• To classify galaxies based on their evolutionary stage