We are on the cusp of discovering alien civilizations, NASA's top scientists have said. They predict we're one generation away from finding something in our Milky Way neighborhood, which is bustling with environments conducive to life.
Humanity is facing two separate challenges in space: one is finding signs of intelligent life, the other is identifying potentially habitable environments. While one may rush to tie the two together, the latter is a considerably easier proposition to make.
Life is like a penny, you can spend it on what you like, but you can ONLY spend it once.