[[Category:th century| *]] [[Category:s| *]] [[Category:th century decades]] In the 51st century, humanity began to spread into the galaxy and to deal with time travel. Another Ice Age affected Earth during this time. (TV: The Talons of Weng-Chiang; PROSE: Emotional Chemistry; AUDIO: The Butcher of Brisbane) Earth began to be abandoned by the rich and powerful as the sun went supernova. Those left behind were fractured into millions of nation-states ("Alliances") battling through the ether in the Transmat Wars. (COMIC: The Keep)