Thanagar

The  was the home planet of the Thanagarians, a race that invaded Earth in 2175.

Current Timeline
In Ancient Egypt, during the time of Khufu and Chay-Ara's first death, Earth and Thanagar aligned, and a meteor fell to Earth which gave Hath-Set immortality and Khufu and Chay-Ara the ability to reincarnate. Another meteor fell in Harmony Falls in 1958, and Savage used it to mutate Tommy Fuller and Jefferson Jackson into Manhawks. The final meteor was collected by Savage in 2021, but flown into the sun by Rip Hunter.