History Fridge / DoctorWhoS34E7KillTheMoon

* The astronauts just accept it when the Doctor tells them he's an alien time traveller, which seems odd, until you realize the astronauts may well have been ''briefed'' on the potential of meeting the Doctor on this trip. Enough world governments know about him that they have plans in place to locate him and/or the [=TARDIS=] in times of crisis, and this certainly fits the bill for a Doctor visit. Possibly a bit of StableTimeLoop going on, since Courtney apparently becomes the President on the United States at some point; if it's either before or during this story, she knows damn well what's going to happen and could discreetly make sure the right people were ready for it. Which leads to some mild FridgeHorror in that President Courtney knowingly sent two men to their deaths. Alternately, if the President who sent those men was her immediate predecessor, she could've used her foreknowledge to publicly criticize the incumbent's decision beforehand, thus making herself look like the better candidate in the next election ("Remember, I ''warned'' the President that mission was suicide! Vote for me!").
* The creature hatched, then left an almost identical egg behind. This leaves open the possibility that ''this has happened before'', maybe even multiple times! We don't know if the eggs take hundreds of millions of years to hatch, or only a few million, or even less. The Doctor mentioned, several times, that humanity has had a giant egg orbiting above for several hundred million years without realizing it. However, as some fans have pointed out, the moon is actually several ''billion'' years old. So maybe the Doctor simply meant that ''this egg in particular'' was several hundred million years old.
* A bit of a meta one. Some found the NoConservationOfMass aspect of the episode ridiculous and distracting, and felt it would have worked better if the gravity aspect of the premise was dropped, if not even throwing in a bit of TechnoBabble explanation from the writer as acknowledgement that the premise might be a bit difficult to believe. After all we're just puny humans, a bit of help would have been nice... like it would have been nice if the Doctor had helped Clara. The writer left us in the lurch just as Doctor did in the episode.
* The Doctor's decision to just get the hell out and let the humans deal with a difficult situation by themselves seems harsh, and Clara's response was indeed well justified from her point of view. However, when you remember [[Recap/DoctorWhoS30E16TheWatersOfMars the last time he was involved in a pivotal event on which humanity's future among the stars depended]], his actions do begin to seem quite different. The Doctor really ''is'' indeed better off avoiding getting involved in events like that, which shows that he got the lesson from the last time.

* Why would the Moon!Creature be born pregnant? Because Moon!Eggs are not a method for Moon!Creatures to make more Moon!Creatures, ''Moon!Creatures are a method for Moon!Eggs to make more Moon!Eggs.''Far weirder creatures have turned up in this franchise, after all.

* There's no way that the population / leaders of Earth -- the people who turned their lights off -- are going to let the ''second'' egg gestate. The moment the Doctor and Clara have gone, they'll be building new spaceships to get up there and kill the embryo. After all, the first egg caused mass death just by growing. And if they find the amniotic fluid's good for anything, extract it and sell it at a profit.
* Even if humans leave it alone, the second egg will probably be broiled alive by the same destructive solar flare cycle that causes the Earth to be evacuated in the era of Starship U.K.

* There's no way that the population / leaders of Earth -- the people who turned their lights off -- are going to let the ''second'' egg gestate. The moment the Doctor and Clara have gone, they'll be building new spaceships to get up there and kill the embryo. And if they find the amniotic fluid's good for anything, extract it and sell it at a profit.

* This episode adds a bit of retroactive Fridge Brilliance to the 1967 episode "The Moonbase", in which Two saved a lunar gravity-control station from the Cybermen. Originally, that episode described the base's Gravitron device as a means of manipulating Earth's weather via gravity, so as to guarantee good harvests and feed an overpopulated planet. But if the original Moon's hatching in 2049 caused devastating tsunami on Earth, then it's much more plausible that the Gravitron was installed on the ''new'' egg to avert similar catastrophes, and using it to play around with weather patterns was just a fringe benefit for 2070.

* The astronauts just accept it when the Doctor tells them he's an alien time traveller, which seems odd, until you realize the astronauts may well have been ''briefed'' on the potential of meeting the Doctor on this trip. Enough world governments know about him that they have plans in place to locate him and/or the [=TARDIS=] in times of crisis, and this certainly fits the bill for a Doctor visit. Possibly a bit of StableTimeLoop going on, since Courtney apparently becomes the President on the United States at some point; if it's either before or during this story, she knows damn well what's going to happen and could discreetly make sure the right people were ready for it. Which leads to some mild FridgeHorror in that President Courtney knowingly sent two men to their deaths. Alternately, if the President who sent those men was her immediate predecessor, she could've used her foreknowledge to publicly criticize the incumbent's decision beforehand, thus making herself look like the better candidate in the next election ("Remember, I ''warned'' the President that mission was foolhardy! Vote for me!").

* The astronauts just accept it when the Doctor tells them he's an alien time traveller, which seems odd, until you realize the astronauts may well have been ''briefed'' on the potential of meeting the Doctor on this trip. Enough world governments know about him that they have plans in place to locate him and/or the [=TARDIS=] in times of crisis, and this certainly fits the bill for a Doctor visit. Possibly a bit of StableTimeLoop going on, since Courtney apparently becomes the President on the United States at some point; if it's either before or during this story, she knows damn well what's going to happen and could discreetly make sure the right people were ready for it. Which leads to some mild FridgeHorror in that President Courtney knowingly sent two men to their deaths.

* The astronauts just accept it when the Doctor tells them he's an alien time traveller, which seems odd, until you realize the astronauts may well have been ''briefed'' on the potential of meeting the Doctor on this trip. Enough world governments know about him that they have plans in place to locate him and/or the [=TARDIS=] in times of crisis, and this certainly fits the bill for a Doctor visit. Possibly a bit of StableTimeLoop going on, since Courtney apparently becomes the President on the United States at some point; if it's either before or during this story, she knows damn well what's going to happen and could discreetly make sure the right people were ready for it.
** Which leads to some mild FridgeHorror in that President Courtney knowingly sent two men to their deaths.

** Even if humans leave it alone, the second egg will probably be broiled alive by the same destructive solar flare cycle that causes the Earth to be evacuated in the era of Starship U.K.