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Apollo 11 (July 16–24, 1969) was the American spaceflight that first landed humans on the Moon. Commander Neil Armstrong and Lunar Module Pilot Buzz Aldrin landed the Apollo Lunar Module Eagle on July 20, 1969, at 20:17 UTC, and Armstrong became the first person to step onto the Moon's surface six hours and 39 minutes later, on July 21 at 02: ...
Coordinated Universal Time ( UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communication, navigation, scientific research, and commerce. UTC has been widely embraced by most countries and ...
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1955–1989. Number built. 104. The Lockheed U-2, nicknamed " Dragon Lady ", is an American single- engine, high altitude reconnaissance aircraft operated from the 1950s by the United States Air Force (USAF) and the Central Intelligence Agency (CIA). It provides day and night, high-altitude (70,000 feet, 21,300 meters), all-weather intelligence ...
A replica of Luna 9, the first spacecraft to land on the Moon The first image taken of the far side of the Moon, returned by Luna 3As part of human exploration of the Moon, numerous space missions have been undertaken to study Earth's natural satellite.Of the Moon landings, Luna 2 of the Soviet Union was the first spacecraft to reach its surface successfull, intentionally impacting the Moon on ...
Golden Week holidays Name Date Showa Day (昭和の日, Showa no Hi), 2007–present 29 April Constitution Memorial Day (憲法記念日, Kenpō Kinenbi), 1949–present 3 May Greenery Day (みどりの日, Midori no Hi), 2007–present 4 May Children's Day (子供の日, Kodomo no Hi), also known as Boys' Day or the Feast of Banners, traditionally celebrated as Tango no Sekku (端午の節句).
The number π (/paɪ/; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although ...
