The phase diagram shows the state of water (H2O) under very high pressure (X-axis) and temperature conditions (Y-axis). These conditions apply in the interior of the ice planets Uranus and Neptune ...

Experimental setup for making ammonia by spraying water microdroplets with nitrogen gas onto a graphite mesh coated with iron oxide (magnetite) and Nafion. Richard N. Zare Enlarge image More than 150 ...