How common are habitable planets?
Author(s) -
Jack J. Lissauer
Publication year - 1999
Publication title -
nature
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 15.993
H-Index - 1226
eISSN - 1476-4687
pISSN - 0028-0836
DOI - 10.1038/35011503
Subject(s) - astrobiology , planetary habitability , circumstellar habitable zone , planet , solar system , astronomy , terrestrial planet , exoplanet , physics
The Earth is teeming with life, which occupies a diverse array of environments; other bodies in our Solar System offer fewer, if any, niches that are habitable by life as we know it. Nonetheless, astronomical studies suggest that many habitable planets may be present within our Galaxy. One of the most basic questions that has been pondered by Natural Philosophers for many millennia concerns humanity's place in the Universe: are we alone? This question has been approached from many different viewpoints, and similar reasoning has led to widely diverse answers.
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