Why can we not see the South Pole-Aitken basin from Earth?
The crater is too small to see from Earth.
The moon rotates too fast to see any surface features.
The crater is on the far side of the moon, which we cannot see.
The sun never shines on that side of the moon, so the crater is always in shadow.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

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