Two potentially life-friendly planets found orbiting a nearby star

Re:Two potentially life-friendly planets found orbiting a ne... by maxxxxx on Tuesday June 18, 2019 @09:28AM (#20212712)

There are plans for doing spectrography on the atmospheres of these planets. This would allow us to get a pretty good picture of the chemical composition. Biological life as we know it should leave a different footprint than a lifeless planet but in the end we can only extrapolate what we already know about life.

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Re:Two potentially life-friendly planets found orbiting a ne... by civilian on Tuesday June 18, 2019 @06:10PM (#20218963)

Yep! And more specifically, if we found a planet that had an atmosphere with O2 in it, that would be highly indicative of life. Although it's not the only option, O2 is pretty reactive, and you need a constant O2-producing force to maintain it. An O2-producing force would be something like plants or some life that is creating hydrocarbons from CO2 and H2O.

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