What makes up our solar system?
Start with this:
Answers from top to bottom:
Neptune
Uranus
Saturn
Jupiter
Mars
Earth
Venus
Mercury
Why is Pluto not a planet anymore?
Pluto was considered a plant for a good amount of time, however is it a dwaf planet which we dont hear about a lot. Its very well known, and most people can name it unlike the others.
Find out more...
https://spaceplace.nasa.gov/ice-dwarf/en/
How can you remember all 8 planets?
Mnemonic devices are ways that make remember things easier. it helps our brain to recall better as well, such PEMDAS and Please Excuse My Dear Aint Sally.
Find out more...
https://www.getlitt.co/blog/solar-system-for-kids-fun-facts/