Life forming. Or is this still happening?
Ah ok.
There's several things to consider.
Start with some basic organic chemistry.
Complex organic molecules are known to form
spontaneously under a wide range of naturally occurring
conditions. Including amino acids on comets.
No organic molecules are assembled " by hand" in a lab, they
occur when the conditions are set.
Nobody knows what conditions existed on earth when life started.
But, given 330,000,000 cubic miles of ocean, many millions
of years, incredible fantasticatillion carbon, nitrogen owygen
and hydrogen atoms and ions, the speed withwhich
reactions occur, its not unreasonable to suppose
that anything that can happen will happen.
A fairly simple self replicating molecule ( there are
such things) would be a good start on life.
And, there being no bright line distinction between
life and non life, theres nobody to say at what point
a self reproducing structure is life, or not - yet life.
Today? Who knows. Nobody has happened upon lab
conditions that led to life.
Out there in the ocean? Any proto- life would not
stand a chance of developing, with all the hungry
microbes out there ready to eat it. Remember your
amoeba etc from high school biology?
And, of course, it would be extraordinarily difficult
to go out there and find your new forms, get them back to
a lab and identify them.