"...so, curiously, not only is water necessary for life, but life may well help retain water on planets."
An interesting thought. So perhaps old planets that still have water are more likely to contain life. We can detect water in some forms on exoplanets already [1] so soon we may be able to predict how common life is in the galaxy?
An interesting thought. So perhaps old planets that still have water are more likely to contain life. We can detect water in some forms on exoplanets already [1] so soon we may be able to predict how common life is in the galaxy?
[1] http://www.nasa.gov/press/2014/september/nasa-telescopes-fin...