The Cold War
There is even a theory that claims our knowledge of space is vaster than what we know about the things lying beneath the ground. During the Cold War, the Soviet Union and the United States took part in a space race. Their mission was to learn more about the cosmos, but they were just as interested in what lies beneath our feet in those days.
Race To The Depths
In the late ‘50s, both Soviet and American scientists began to plan experiments that would penetrate the crust. It is the name of the part of the planet that spans thirty miles towards the center of the Earth. What comes after this dense shell is known as the mantle. The mysterious inner layer actually makes up around 40 percent of the mass of the planet.