The Moon is by far the most attractive location for an off-Earth colony. Its nearness and one-sixth earth gravity make it much more easily accessible than for example the closest planet, Mars. This……続きを見る
著者：Duke Dupree
出版社： Page Publishing, Inc.
発売日： 2020年11月24日
Patricia Henderson became a very talented pianist. She was taught by her maternal grandmother who was a concert pianist. Patricia also became rich since her paternal grandfather, who made it big in ……続きを見る
