turnkey4099
Elite Member
These spacecraft have contributed to confirming the discovery of lunar water ice in permanently shadowed craters at the poles and bound into the lunar regolith.
Similarly, there are places that remain in permanent shadow at the bottoms of many polar craters,[66] and these dark craters are extremely cold: Lunar Reconnaissance Orbiter measured the lowest summer temperatures in craters at the southern pole at 35 K (−238 ーC)[91] and just 26 K close to the winter solstice in north polar Hermite Crater. This is the coldest temperature in the Solar System ever measured by a spacecraft, colder even than the surface of Pluto.
Minimum/Maximum Surface Temperature
Metric: -233/123 ーC
English: -387/253 ーF
Scientific Notation: 40/396 K = kelvins
I did not research Mercury, so I don't know about it.
The sun facing portionof Mercury, due to its closeness to the sun, is hot enough to keep lead molten. The Moon gets nowhere near that hot. So the differential on Mercury would far exceed that of the moon. As far as the coldest place in the solar system, I'll bet some of the outer planets/moons will exceed the moon's also.
but enough of that.
Earth geography: What is the farthest East state in the U.S? The Farthest West?
Harry K