Interstellar Travel

       Interstellar travel is already happening, Pioneer 19 and Voyager 1 are more than 6.5 billion miles from earth. But further breakthroughs on the fronts of propulsion, speed and energy need to occur before truly effective interstellar travel can.
       With blasting propellant the rockets are able to push the spacecraft in the desired direction. The problem is the extreme amounts needed with increasing the payloads, destinations and speed. "For example, to send a payload the size of a school bus to the nearest star within 900 years, you'd need ... well, more mass than there is in the entire universe. This assumes that you're using chemical engines like those on the space shuttle. With nuclear fission rockets the situation gets better, but not by much the propellant required would fill a billion supertankers." (Millis)

       Twenty-six trillion miles away is the closest star, traveling the speed of light it would take more than four years to get there. Non-propellant space drive would improve the speed situation dramatically, but why not just circumvent the speed of light? Distort the fabric of Space-Time and create a "wormhole". Or use "warp drives."

Just move segments of Space-Time.
       Pure energy...? Currently to send a space shuttle sized vehicle on a 50-year trip it would need the equivalence of a nuclear power plant of energy. Why don't we just create a wormhole? Easy, to make a three-foot wide wormhole you would have to take something the mass of Jupiter and change it into negative energy.
       Before any effective form of interstellar travel occur the human race needs some major breakthroughs in the fields of propulsion, speed and energy!