I Just stumbled upon an article that propounds what I suspected long ago.
That blackholes, are a portal to either another universe or another dimension.
Blackholes, formed after the implosion of a dying star, have exciting properties that even modern physics cannot completely describe.
So powerful is its gravity that even light cannot escape once it gets to the event horizon.
Nobody knows what happens after that.
But considering how vast our observable universe already is, and how unrealistic certain travel methods are (even the speed of light which we have not attained 1/100th of, will still take billions of years to traverse our Universe), one can only think secrets to traversing large distances in space may be through black holes, or some other form of propulsion which our knowledge cannot yet describe completely.
It will be interesting to find out what lies at the other end of a blackhole.