1954: The First Transistor Radio
On this day it was announced that the first radio based on transistor circles has become available. Previous transistors were based on cathode ray tubes and were thus lar...
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1933: Albert Einstein Leaves Nazi Germany
Hitler came to power in Germany in January 1933. At that time Einstein was working in the USA as a university professor. In April, the Nazi government forbade Jews to lec...
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2012: Closest Extrasolar Planet Discovered
A celestial body which is believed to be the closest extrasolar planet to Earth was discovered on this day in 2012. It has the provisional name of Alpha Centauri Bb, and...
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2003: Yang Liwei: First Chinese in Space
On this day in 2003, the People’s Republic of China became the third country in history to successfully send a man into space. Only two other countries (the USA and...
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1997: ThrustSSC – The First Supersonic Automobile in History
The world speed record for ground vehicles was set on this day in 1997. It was also the first time in history that a ground vehicle broke the sound barrier (Mach 1). The...
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1947: The Sound Barrier Officially Broken for the First Time in History
On this day in 1947, the sound barrier was officially broken by an aircraft for the first time in history (i.e. it achieved a speed of Mach 1). The man responsible for th...
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1982: Mary Rose: Huge European Warship Recovered from the Sea after 437 Years
The greater part of the Mary Rose was recovered from the sea on this day in 1982. This was one of the most spectacular maritime archaeology undertakings in history. The M...
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1731: The Scientist who Measured the Earth’s Mass
The famed Henry Cavendish, the scientist who performed the first experiment which allowed the mass of the planet Earth to be calculated. Scientist Henry Cavendish was of...
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