Our neighboring planets may have the answer to this question. Scientists have already identified ice caps on Mars and what appear to be enormous oceans undernea

Our neighboring planets may have the answer to this question. Scientists have already identified ice caps on Mars and what appear to be enormous oceans undernea

This book describes a wide variety of speculations by many authors about the consequences for humanity of coming into contact with extraterrestrial intelligence

Interest in exoplanets--the worlds of other stars--is not new. From the late 17th century until the end of the 19th, almost all educated people believed that th

If we have learned anything from recent advances in cosmology and astronomy, it is that we have only barely begun to comprehend the vastness of our universe and