Space.com on MSN6d
Mars could have an ocean's worth of water beneath its surface, seismic data suggest
Seismic readings of the interior of Mars strongly suggest large quantities of water buried 6 to 12 miles underground.
BBC2y
Observing waves in water
If you throw a pebble into a pond, ripples spread out from where it went in. These ripples are waves travelling through the water. Like ocean waves, these ripples are transverse waves because the ...