I was watching Knights of Sidonia a while back, and one of the episodes in season 2 takes place on a gas giant. Throughout the episode, countless large boulders, each probably larger than a city block, were being pushed around by the intense winds within the cloud layer. Is this possible in real life?
I'm not looking for habitable conditions, as I don't expect people to be living on these rocks. This is just a question of curiosity.