Why is everything always the final frontier? Its kind of depressing that they said that space is the FINAL frontier. Does that mean we have nothing to aspire to after that? Now apparently the new "final frontier" is lettuce.
At the moment we are at a point in time where we cant see the end of space but there might be another "ocean" at the end, who knows!
Actually this is a common misconception. Educated people have known the earth was spherical since the birth of astronomy.