Talk:Timeline/@comment-109.98.190.96-20180110113632/@comment-24670104-20180113201026

There were 13 space stations already up in space (12 national stations + Becca's private station, Polaris) at the time of the nukes. ALIE hacked into the nuclear lauch codes and killed the majority of people on Earth. The only people alive after that were the few survivors on the ground (who's grandchildren are the Grounders we see on the show) and the people who were living and working on the space stations. After a couple years, the 12 national stations unite to create the Ark, and Alpha Station destroys Polaris Station.