Scientists have detected water vapor in the atmosphere of an exoplanet 65 light-years away. The world is a so-called "hot Jupiter"-- a massive planet orbiting extremely close to irs parent star-- so it's not seen as a likely home for life. The significance of the discovery of water vapor may be that science now has a proven method of detecting water vapor in the atmospheres of planets circling other stars.
Having said this exoplanet probably doesn't harbor life, last month carbon dioxide was detected in its atmosphere. Now we know there's carbon dioxide, water vapor, and an energy source. So....
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