The nuclear tests were performed in the Ras Koh hills in the Pakistani province of Balochistan. Pakistan conducted its first series of true nuclear tests on this day in 1...
The Soviet Tupolev Tu-144 became the first commercial (non-military) aircraft which exceeded Mach 2, on this day in 1970. The only other commercial supersonic aircraft in...
Apollo 10 attained a speed of up to 39,897 km/h. To date, it remains the absolute speed record set by a manned vehicle. On this day in 1969, human beings achieved the hig...
Halley’s Comet comes close to the Sun around every 75.3 years, but the period varies somewhat due to changes in the comet’s orbit. Halley’s Comet became visible to the na...
Cannon like that can fire nuclear shells of about 15 kilotons, which roughly corresponds to the bomb dropped on Hiroshima. On this day the first nuclear shell was fired o...
On this day in 1968, the Gateway Arch was dedicated in the U.S. city of St. Louis. It is the world’s tallest arch. The Gateway Arch is 192 meters tall, which means...
On this day in 1961, the U.S. President John F. Kennedy delivered a speech in which he announced the Apollo program. Namely, he announced that the United States would sen...
This day in 1498 marked an important event because the ships of Vasco da Gama landed on the Indian coast as the first ships which came from Europe to Asia, using a route...