A mission to launch multiple probes into the atmosphere of Venus was launched on this day in history.
The Pioneer Venus 2, or Pioneer 13, unmanned spacecraft was launched into space on an Atlas-Centaur rocket on August 8th, 1978.
The craft featured four probes to be sent into the hot, high-pressure Venusian atmosphere. These probes included a variety of instruments to further study the second-closest planet to the sun.
The mission was a success, with all four probes successfully entering the atmosphere and returning data back to Earth. One of the probes actually survived impact with the surface of Venus, and returned data for a time before eventually succumbing to the heat and pressure of the planet.