... also at the right distance to their host star for liquid water to be present on their surface – the essential ingredient ...stellar habitable zone – the distance range around a star where liquid water might pool on the surface of an orbiting planet. “...
... different chemical layers; a lower layer made of water ice and liquid water, a middle one made of ammonia and sulphur,... turbulent. And, finally, where there's the potential for liquid water, the possibility of life cannot be completely ruled out. ...
... just don't know whether there could have been enough liquid water at some point for supporting microbial life," said Jack ...Laboratory, Pasadena, California. "We know early Mars had enough liquid water on the surface for rivers and lakes. Where did it...
...have been relatively hot in the beginning and had a subsurface liquid ocean early in its development; a finding that has implications ... planets in the Kuiper belt, started off with liquid water oceans and some “will probably have undergone extensive ...
... crater provides a similar environment and at both poles there is believed to be frozen water in the crater shadow regions which may provide a source for a liquid water supply chain. With one of the major roles of a lunar colony being to provide...
...a planet habitable for life as we know, such as liquid water and a decent non-toxic atmosphere, are long lost, ...see that if conditions are not right, such as a lack of liquid water or a toxic or thin atmosphere, then the chances of intelligent life...