简介:The enterprising alien who wants to visit Earth faces a number of daunting challenges. This program examines the advanced technologies he would need with an emphasis on concepts for interstellar travel humans are exploring.
The enterprising alien who wants to visit Earth faces a number of daunting challenges. This program examines the advanced technologies he would need with an emphasis on concepts for interstellar travel humans are exploring.
内容简介
The enterprising alien who wants to visit Earth faces a number of daunting challenges. This program examines the advanced technologies he would need with an emphasis on concepts for interstellar travel humans are exploring.