The first time humans ever saw "it" was 1959, when a Soviet space probe first photographed it. What was it?

For all of human history, one half of the Moon has remained a complete mystery from our vantage point on Earth. This is due to a phenomenon called tidal locking, where the Moon rotates on its axis at the exact same rate that it orbits our planet. The result is that the same lunar face is perpetually turned toward us, leaving the "far side" completely hidden from view. It was a vast, unknown territory that could only be explored by leaving Earth's orbit.

That cosmic veil was finally lifted during the height of the Space Race. On October 7, 1959, the Soviet Union's Luna 3 probe successfully swung around the Moon and transmitted the first-ever photographs of its hidden face back to Earth. It was a monumental achievement, marking the first time any celestial body had been circumnavigated and photographed by a man-made object.

The initial images were grainy and indistinct, but they were revolutionary. They revealed a landscape starkly different from the familiar near side, one that was more rugged, mountainous, and heavily cratered, with very few of the large, dark plains known as "maria." This mission not only provided a major propaganda victory for the Soviets but also fundamentally changed our understanding of our closest celestial neighbor, revealing it to be a world of two distinct halves.