Traveling near the speed of light or at it will never happen. Infinite energy / mass problem. Plus everyone back at earth will have aged equivalent to the numbe

Traveling near the speed of light or at it will never happen. Infinite energy / mass problem. Plus everyone back at earth will have aged equivalent to the number of light years away, while it may feel only like a couple weeks on the ship. Unless we develop some type of wormhole technology, we're pretty much confined to our immediate system for any realistic exploration and communications.