Alien Intelligence and the Pathway to Mars: The Hidden Connections between the Red Planet and Earth - Mary Bennett; David S. Percy; David Hatcher Childress (Paperback) 08-07-2021
Extraterrestrial: The First Sign of Intelligent Life Beyond Earth - Avi Loeb (Hardback) 04-02-2021
Impossible Truths: Amazing Evidence of Extraterrestrial Contact - Erich von Daniken (Paperback) 08-06-2021
