Do you think the universe goes on forever or is a cylinder like shape? If so what do you think is outside the universe?

Question: Do you think the universe goes on forever or is a cylinder like shape? If so what do you think is outside the universe?
- Keywords:
  after,
  before,
  beyond,
  big bang,
  cylinder,
  nothing,
  outside,
  shape,
  space,
  universe
Asked by jessica606 to Alan, Murray, Sarah on 25 Mar 2011.
- Murray Collins answered on 24 Mar 2011:
  
  Well the universe is expanding. I just answered another question like this.
  
  http://ias.im/35.2972
  
  Honestly, I really don;t know as it’s not my area. I reckon you should ask the guys in the space zone to get a really good answer!
- Sarah Thomas answered on 25 Mar 2011:
  
  I don’t think the universe strictly has a shape. I guess it would probably look like a massive squidgy jelly fish, because technically the universe goes beyond geometry, curvature and shape, and it’s contantly changing, who knows where it’s edges are. I think there is nothing outside the universe, I don’t really think a true edge exists.

Question: Do you think the universe goes on forever or is a cylinder like shape? If so what do you think is outside the universe?