What conditions are scientists looking for in their search for life on another planet? The presence of water is key, explains Bill Nye, aka The Science Guy. Want another candidate to sustain life? Liquid ammonia. And yet, as Nye points out, we haven’t found anything on Earth or even near the Earth that can live on liquid ammonia. That is why water remains the best bet and we are creating telescopes and software that will allow us to detect water on another world.
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