Antarctica

[Combining soft and hard + grand background + interstellar navigation + Three-body and the Wandering Earth] In 2173, an asteroid hit the earth, causing humans to avoid Antarctica. After a century and a half of development, humans re-emerged in Antarctica. However, a hundred years later, mankind will once again face the threat of an asteroid hitting the earth. Can mankind escape this disaster? Is Earth a laboratory for alien experiments? Was the asteroid impact on the Earth caused by an alien civilization? Can the Hope spacecraft reach Proxima Centauri and find a new home for mankind?