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11 hours ago · The Lockheed P-3 Orion is a four-engined, turboprop anti-submarine and maritime surveillance aircraft developed for the United States Navy and introduced in the 1960s. Lockheed based it on the L-188 Electra commercial airliner; it is easily distinguished from the Electra by its distinctive tail stinger or "MAD" boom, used for the magnetic anomaly detection (MAD) of submarines.
- November 1959
- Lockheed – 650, Kawasaki – 107, Total – 757
11 hours ago · The seventeen towns and mines under Wismut's control contributed 50 percent of the uranium used in the Soviet's first atomic bomb, Joe-1, and 80 percent of the uranium used in the Soviet nuclear program. Of the 150,000 laborers, 1281 were killed in accidents and 20,000 suffered injuries.
1 day ago · This data is used by the United States Nuclear Detonation (NUDET) Detection System (USNDS) to detect, locate, and report nuclear detonations (NUDETs) in the Earth's atmosphere and near space. One usage is the enforcement of nuclear test ban treaties. The L4 band at 1.379913 GHz is being studied for additional ionospheric correction.
- United States
- Military, civilian
- Operational
- US Space Force
11 hours ago · BEIJING, March 29. /TASS/. China attaches great importance to the safety of nuclear power plants in Ukraine and is calling for an early political solution to the conflict to eliminate relevant ...
11 hours ago · 美国海关和边境保护局警告夏季炎热 穿越边境危险性高. 2024年3月29日 15:00. 0:00 1:51. 美国海关和边境保护局周四(3月28日)在亚利桑那州图森与来自 ...
11 hours ago · A 1954 thermonuclear test, code named Castle Romeo; In 1959, Fidel Castro overthrows Fulgencio Batista in the Cuban Revolution, which results in the creation of the first and only communist government in the Western Hemisphere; Elvis Presley becomes the leading figure of the newly popular music genre of rock and roll in the mid-1950s.
11 hours ago · China has prohibited first-cousin marriage since 1981, although cross-cousin marriage was commonly practiced in China in the past in rural areas. [20] [127] An article in China Daily from the 1990s reported on the ban's implementation in the northeastern province of Liaoning , along with a ban on marriage of people who were physically and ...