Meteors Might Add Methane to Exoplanet Atmospheres
Meteoroids slamming against the atmospheres of alien worlds could add organic gases that make them look inhabited by life even if they are not, researchers say.  In recent years, astronomers have detected hundreds of extrasolar planets. Many of these exoplanets lie within habitable zones, the zones around their stars warm enough for liquid water to persist on a planet’s surface, raising hopes that life as we know it might live on these distant worlds.
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Meteors Might Add Methane to Exoplanet Atmospheres

Meteoroids slamming against the atmospheres of alien worlds could add organic gases that make them look inhabited by life even if they are not, researchers say.

In recent years, astronomers have detected hundreds of extrasolar planets. Many of these exoplanets lie within habitable zones, the zones around their stars warm enough for liquid water to persist on a planet’s surface, raising hopes that life as we know it might live on these distant worlds.

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