In 1896 – Wilhelm Roentgen spoke to the Würzburg Physical Medical Society where he demonstrated X-rays by photographing the hand of session chair Dr. Albert von Kolliker, a famous anatomist.
In 1960 – With a crew of two, the bathyscaphe Trieste, descended 10,911 meters in the Pacific Ocean into Challenger Deep in the Mariana Trench near Guam, the deepest known point in the oceans.
In 2003 – Earth lost communication with space probe Pioneer 10 which was 12 billion-kilometers from Earth.
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