太阳系：海王星
Neptune is the 8th planet in the Solar System. An ice giant, its existence was not known until 1846 when it is discovered through mathematical predictions made independently by J. C. Adams and U. LeVe …
Neptune is the 8th planet in the Solar System. An ice giant, its existence was not known until 1846 when it is discovered through mathematical predictions made independently by J. C. Adams and U. LeVe …
