Do you know the solar system? On last few years some discoveries changed the structure of our solar system, a planet were demoted, new dwarf planets were discovered. Check it out and compare solar system planets' data.
你知道太阳系?在过去几年中的一些发现改变了我们太阳系的结构,行星被降级,新的矮行星被发现。检查出来,并比较太阳系行星的数据。