What is it called when a star explodes?
"This big explosion is called a supernova."
Unscramble the Word: (opuvseran)
"supernova"
What happens as a star gets older?
The middle of the star gets very hot, and the star gets bigger.
"Astronomers knows that stars are ____, stars get _____, and then stars ___."
born / older / die
What color are the hottest stars?
The hottest stars are blue.
What do astronomers know about the Sun?
"They know that our Sun is a yellow star."
Unscramble the Word: (nasroormet)
"astronomer"
How much brighter than our Sun is the light from a supernova?
"It is a billion times brighter than our Sun!"
What color are the coolest stars?
The coolest stars are red.
Who studies the stars out in space?
Astronomers study the stars out in space.
What is another name for a big, old star?
"red giant"
What do astronomers know about the Earth?
"Astronomers know that the Earth we live on goes around the Sun."