Planets
Stars
Moons
Dwarf planets
Other facts
100
what is the third planet from the sun

earth (duh)

100

what is our star

the sun

100

what is the name of our moon (bonus if you can guess it's other name)

the moon (luna)

100

which dwarf planet was considered as the 9th planet of the solar system for a while

pluto (sorry pluto)

100

what is the name of our galaxy

the milky way
200

which is the hottest planet in our solar system

venus

200

what happens when really big stars die

supernova

200

what is the name of the group that contains jupiter's four biggest moons. (bonus if you can get 2 of their names, and a second bonus for all 4)

the Galilean moons (Their names are Ganymede, Europa, Callisto and Io)

200

how many dwarf planets do we have

5

200

what do we call planets outside of our solar system

exoplanets

300

Which planets in our solar system have rings

Jupiter, saturn, uranus, neptune

300

will our sun explode

no

300

how many moons does pluto have

5

300

what dwarf planet is in the asteroid belt

ceres

300

what is the ort cloud

a sphere shaped asteroid belt like mass of rocks at the edge of the sun's major gravitational influence

400

how many moons does Uranus have

28

400

what star has the most planets (bonus if you can guess the number)

the sun, kepler-90 (8)
400

what is the definition of a moon (does not have to be word for word)

A moon is a natural satellite, meaning it is a celestial body that revolves around another celestial body, which is a planet or a dwarf planet. (also asteroids)

400

what is the oval shaped dwarf planet because of its fast rotation

Haumea

400

what is the roche limit

on a bigger object, it is the distance at which tidal forces becomes stronger than the smaller object's own gravity and rip it apart

500

Which planet is thought to have formed first in our solar system

Jupiter

500

what is the biggest known star

Stephenson 2-18 (fact: it is a red hypergiant star estimated to be about a whopping 2,150 times the size of out sun, and estimated to be around 20-40 times the mass of our sun)

500

what moon has the biggest size compared to its parent object

Charon (it is about half the size of its parent object which is pluto)

500

what dwarf planet has rings

Haumea

500

what is the largest known black hole (bonus if you can tell how many solar systems we can put back to back in it's Schwarzschild (radius aka: the point of no return.))

ton 618 (29)