It has been an exciting month in the world of exobiology, the scientific study of possible life on other planets. A few weeks ago, scientists at Harvard University presented findings indicating that as much as 35 percent of all known planets larger than Earth may be water-rich. Following closely in their wake, researchers at the University of Chicago came out with a study last week in The Astrophysical Journal showing that the amount of water needed for life to develop comes in a much broader range than previously thought. The news has stirred up a lot of hype lately, and many are wondering if we have now reached a point at which it is no longer scientifically acceptable to think that humans are alone in the cosmos.