JOLLY DAYS

Life On The Planet

The necessary preconditions for a planet to develop life:

…the home star has to be far enough from the galactic center to be away from lethal black hole pyrotechnics…but not so far into the galactic sticks that stellar evolution has not yet produced enough of the heavier elements like oxygen and iron needed for planets and life… its planet has to have liquid water, a magnetic field to keep away cosmic rays, plate tectonics to keep things stirred, a giant outer planet to keep away comets and asteroids and perhaps a big moon to stabilize its rotation axis.