Front

What is an Irregular Galaxy?

Back

A type of galaxy formed by the gravitational pull of nearby galaxies, lacking a distinct shape.

Front

What shape does a Spiral Galaxy resemble?

Back

A pinwheel shape, like the Andromeda Galaxy.

Front

What is an Elliptical Galaxy?

Back

A type of galaxy that is oval or egg-shaped, often very old and containing mostly older stars.

Front

What is the Doppler Shift?

Back

A change in the frequency of light or sound waves from an object due to its motion relative to an observer.

Front

What is a Spiral Galaxy?

Back

A galaxy characterized by its spiral arms that wind outward from the center.

Front

What is the main characteristic of an Elliptical Galaxy?

Back

They have a smooth, featureless light profile and are often composed of older stars.

Front

What happens to light from a star that is moving away from us?

Back

It is red-shifted, meaning its wavelength is stretched.

Front

What happens to light from a star that is moving towards us?

Back

It is blue-shifted, meaning its wavelength is compressed.

Front

What is the significance of the electromagnetic spectrum in astronomy?

Back

It helps astronomers understand the properties of stars and galaxies based on the light they emit.

Front

What is a key feature of Irregular Galaxies?

Back

They do not have a defined shape and can appear chaotic.