Martian lake beds and deltas reveal the Red Planet’s watery past. But many puzzles remain, scientist Bruce Jakosky says.

The Mars water debate continues. A team of scientists suggests vast oceans of water may not be locked within the Red Planet's crust, despite InSight lander data.

34,734 people played the daily Crossword recently. Can you solve it faster than others?34,734 people played the daily Crossword recently. Can you solve it faster than others?

When NASA's InSight Mars Lander survived the "seven minutes of terror" and made its triumphant landing on Mars Monday afternoon, some of its success was owed to the software running inside.