People have been fascinated with the stars and outer space for as long as human have been around. And now people are getting really focused on exploring space since it's the last frontier known to man. However with current means of propulsion a task like interplanetary travel would take months to travel to mars, years just to travel to the outer edge of the solar system. So forget traveling outside of it.

So only way to make space travel viable would be faster than light travel.But as anyone who's taken middle school science can tell you nothing can travel faster than the speed of light. Nothing. So the only ways around that to my knowledge are either an alcubierre drive or worm holes.

To those who don't know alcubierre drives are basically warp drives from star trek. By warping space around a ship it allows it to move faster than light without breaking any rules of physics. All it requires are hypothetical matter and currently non-existant sources of energy. Worm holes are basically punctures in the fabric of space time acting as instant bridge between two points. So by opening a point on one end you can instantly travel to the other. In theory. Some people believe balck holes are a type of Wormhole but obviously it's never been proven.

All of this to say is which is more likely that mankind is going to develop for interstellar travel. Assuming we don't destroy ourselves or our planet in these next few centuries. Mankind is going to want to travel to the stars, possible even meet aliens, if they exist. So which is more likely?