India mulling deeper exploration of water on moon

Chandrayaan II will be build more efficiently for a deeper study on the presence of water underneath the moon's surface.

NASA Mars Lander digs deeper as 90 Martian Days end

The Phoenix's main task for Sol 90 is to scoop up a sample of soil from the bottom of a trench called "Stone Soup," which is about 18 cm, or 7” deep.