Planetary Exploration Archives

$Here's a clearer version: An illustration shows the Martian interior beneath NASA's Insight lander. The top 5 kilometers of the crust seem to be dry, but a new study suggests there's a zone of fractured rock 11.5-20 kilometers below the surface that contains a significant amount of liquid water—more than what was thought to have filled ancient Martian oceans. (Illustration credit: J)$