Every day, scientists are discovering more of space, which, I suppose, is still the Final Frontier. That is, unless you count the salad bar at truck stops, since that is another weird phenomenon as well.
There is an ongoing treasure hunt for sustainable-life planets. That's not surprising, considering the world's population is more than 6.6 billion (and growing, if you want to view). Where are all of the people going to go? There's just not enough space between the croutons and bacon bits.