Draw and label a graph showing the difference between open, flat and closed universe.

Question

Accepted Answer

Draw a graph with 'Time since the Big Bang' on the x-axis and 'Radius of the Universe' on the y-axis. Draw three curves starting from the origin: a curve that keeps rising continuously and label it 'Open Universe'; a curve that rises and then becomes almost flat (levels off) and label it 'Flat Universe'; and a curve that rises and then comes back down to zero and label it 'Closed Universe – Big Crunch'.