Planets
Star
Moon
100

How many planets are in our solar system?

8

200

What is the name of our galaxy?

The Milky Way

200

what is the star in the middle of the solar system 

the sun

300

What is the farthest planet from the sun?

Neptune

300

who was the first person that walked on the moon

Neil Armstrong

400

How many dwarf planets are there?

5

400

why do astronauts bounce on the moon instead of walking normally 

because there is less 

500

Which of our eight planets is sometimes described as "Earth's twin"?

Venus

500

how many stars are there in the universe 

200 billion trillion 

M
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