We know DNA and and even semi self replicating biochem molecules can form both in the presence and absence of gravity. It requires a suitable energy gradient th

We know DNA and and even semi self replicating biochem molecules can form both in the presence and absence of gravity. It requires a suitable energy gradient though, and I like the idea that cyclical changes in the energy gradient are required for evolution to occur rather than stagnating in a specific state. This is partly why tidepools are an interesting candidate for early life.