this may be true manchild, but there is a little problem there: how would u know if they have the same technology we have, or if they are in the same evoltuion phase. when they say life on other planets, or in other galaxies, they don't really mean humans, or "aliens", but any living form, even a single cell.
Today i was having this discussion with my physics teacher. I followed his speech untill he started talking about relativity, and how mass changes when traveling at the speed of light.. at that point, i crashed and burned 
 
  