hard space quiz

what is pluto used to be?

• a star

• a dwarf planet

• a planet

• all of the above

what formed the moon?

what is the closest star system to our solar system?

• proxima centuari

• sirus

• sun

• j407b

what planet has the biggest rings?

what is the dwarf planet that is in our asteroid belt?

is planet earth habitable?

(yes or no)

how many planets is in our solar system?

are the rings of j1407b bigger than saturn's rings?

what galaxy is the closest to our galaxy?