Planets do not rotate on their axis, moons do not orbit their planets, and planets do not orbit a sun. There isn't even a sun, it's just decoration on the sky box. This may be the largest cut element, "solar systems" in the game are only static planets hanging in space. Whether or not you land on the dark or light side of a planet doesn't matter. This may have more wide-ranging effects than just aesthetics, as there were many things said to be governed by the planetary simulation. Planets closest to the "sun" are just as likely to be frozen as the ones furthest away, for instance, which may have messed with all the systems that relied on there being a meaningful distinction there, considering all of those things either seem completely borked, or removed outright (more on that further down.) In terms of player experience, the loss of the simulation meant the loss of dynamic solar systems, which meant everything became little more than a shiny diorama. This is another thing that Sean was talking about just four months ago.