Planet Nine!!!!! If you want to talk about Astrophysics/Astronomy/the Universe you know who to talk to!!!!!! If you are just starting out with Astrophysics or Astronomy, I would suggest reading some of Neil deGrasse Tyson's books. Search up all unknown words and you'll make sense of the universe more quickly than you would have thought possible!!!
I LOVE ASTROPHYSICS!!!!!!!!!!!!!!
