| easy | medium | hard |
|---|---|---|
|
jupiter
what is the biggest planet in the solar system
|
star
is the sun a star or a planet
|
186 282.397 miles per second
what is the speed of light
|
|
mecury
what is the smaller planet in the solar system
|
sun
what is the biggest star in the univest
|
a star can be a black hole
what is a black hole
|
|
Neptune
what is the colddes planet
|
Lut Desert
what is the hottest place on planet earth
|
|
|
Venus
what is the hottest planet
|
East Antarctica
what is the coldest place on planet earth
|
|
|
eight planets
how many planets are in the solar system
|
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