25 facts about Earth
Although 4 billion years ago no sane person would have given the Earth a chance to support life, today it is a concentration of countless forms of liv ...
The Cold War, although a grim period in world history, brought an intense rivalry in a space race between the U.S., and the Soviet Union. As a result, the most famous space-related organization—NASA—was established, and the dream of conquering the cosmos finally started to come true.