Here's another article proclaiming - prematurely, of
course - lots of water lies under Mars.

http://news.bbc.co.uk/hi/english/sci/tech/newsid_1456000/1
456708.stm

Water reserves found on Mars
By BBC News Online science editor Dr David Whitehouse

'..."We infer the terrain to be made of dust held
together in some way," write the researchers in the
journal Nature.... They believe that the dust layer is
porous and between one and 10 metres (3-32 feet) deep. It
is in the pores that the scientists believe ice has
formed that cements the dust particles together....'

More on water in the universe:

http://www.sciam.com/2001/0801issue/0801quicksummary.html

The Ice of Life
By David F. Blake and Peter Jenniskens

[caution: it's only an article summary - gotta buy it]

And back here in our own solar system...

http://www.nature.com/nsu/010726/010726-12.html

Callisto's watery secret
One of Jupiter's moons may hold an underground ocean.
26 July 2001
ERICA KLARREICH

'...Applying the analysis by Ruiz to other moons, such as
Jupiter's Ganymede and Saturn's Titan, could also reveal
underground seas. "This makes it a lot easier to have
liquid water in icy satellites," Kargel says....'