Visits By ET May Not Be So Impossible

. . In 2012 NASA physicist Harold White stunned the aeronautics world when he announced that he and his team had begun work on the development of a faster-than-light warp drive. His proposed design is an ingenious re-imagining of an Alcubierre Drive. If successful it could may eventually result in an engine that can transport a spacecraft to the nearest star in a matter of weeks without violating relativity limitations.  It suggests that we shouldn't be so skeptical of the search for ET.
. . White explains how this might be possible at 

http://io9.com/5963263/how-nasa-will-build-its-very-first-warp-drive