Salt preserves a water’s flow,
Suppresses freezing in the cold.
Cassini’s gravity data show
There is salt water down below
Titan’s outer crust of ice,
And liquid water does entice.
Salt on Mars may also say
That water flows there some days.
Ten times the salt of earthly seas
But for a very few of these.
The Dead Sea harbors microbes small
That only thrive when rain drops fall.
Alga, fungi, biofilms
Find fresh water most welcome.
Yet methane found on Titan, Mars,
Cannot survive the sunlight scars.
On Earth we’d say that life is there
Releasing methane in the glare.
So is there life on Saturn’s moon?
Did Martian soils ever bloom?
Now we’re poised to learn more,
To fly the missions, and explore.
by Kate Rauner