Front

What does a blue shift in a galaxy indicate?

Back

The galaxy is moving towards us.

Front

Which star is known for being cool and bright?

Back

Betelgeuse.

Front

What will our Sun become when it begins to die?

Back

A red giant.

Front

Which star is warm/hot and dim?

Back

Sirius B.

Front

What does a red shift in distant galaxies suggest about the universe?

Back

The universe is expanding.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

Front

What is the difference between a blue shift and a red shift?

Back

A blue shift indicates an object is moving towards the observer, while a red shift indicates it is moving away.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion of a star, marking the end of its life cycle.

Front

What is a red giant?

Back

A red giant is a late stage in the life cycle of a star, characterized by a large size and a reddish color.

Front

What is the significance of the Hubble's Law?

Back

It states that the farther away a galaxy is, the faster it is moving away from us, supporting the idea of an expanding universe.