That would make these regions (pictured right) potential hotspots for alien life because they would have held chemical - rich water — a key ingredient for life. (newscientist.com)
It's this region around a star where a planet could have temperatures that support liquid water, widely considered an essential ingredient for life. (sciencenews.org)
And we've also found that the crucial ingredient for life on this planet — water — is common in space. (scientificamerican.com)