How come all of the planets don’t float around in space

Question: How come all of the planets don’t float around in space
- Keywords:
  float,
  planet,
  space
Asked by anon-208645 to Tori, Titus, Stuart, Hannah, Gill, Alessandro on 7 Mar 2019.
- Hannah Dalgleish answered on 7 Mar 2019:
  
  Just as gravity keeps the moon going around Earth, gravity keeps all the planets in orbit around the Sun. Gravity also keeps the stars in orbit around the supermassive black hole at the centre of the Milky Way. Without gravity the universe would be an entirely different place. 😉
- Stuart Higgins answered on 8 Mar 2019:
  
  What Hannah said 🙂
- Tori Blakeman answered on 12 Mar 2019:
  
  Gravity!
  
  *mic drop*
  
  (that’s gravity)
  
  (also what Hannah said for a more in-depth answer haha)
  
  p.s. there’s also the theory that Dark Matter is another level of gravitational force that might be holding the universe together. Dark Matter constitutes around 80% of the matter (basically “stuff”) in the universe, but scientists are not 100% what it really is!! It is a huge mystery.

Question: How come all of the planets don’t float around in space