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It was launched from Johnston Atoll on July 9, 1962, and was the largest nuclear test conducted in outer space, and one of five conducted by the US in space. A Thor rocket carrying a W49 thermonuclear warhead (designed at Los Alamos Scientific Laboratory ) and a Mk. 2 reentry vehicle was launched from Johnston Atoll in the Pacific Ocean, about ...
High-altitude nuclear explosions are the result of nuclear weapons testing within the upper layers of the Earth's atmosphere and in outer space. Several such tests were performed at high altitudes by the United States and the Soviet Union between 1958 and 1962.
As of January 2025, in-flight accidents have killed 15 astronauts and 4 cosmonauts in five separate incidents. [2] Three of the flights had flown above the Kármán line (edge of space), and one was intended to do so.
Also, about sixteen old Soviet nuclear space reactors are known to have released an estimated 100,000 NaK liquid metal coolant droplets 800–900 km up, [5] which range in size from 1 – 6 cm. [5] The greatest risk to space missions is from untracked debris between 1 and 10 cm in size. [ 1 ]
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Now new research claims to have shown that the explosion is in fact a nearly perfect sphere, and is completely symmetrical. Scientists have pursued a number of possible explanations – such as ...
International Space Station astronaut Alexander Gerst caught footage of the Cygnus spacecraft as it burned up in Earth's atmosphere and broke apart. The resupply ship was carrying 1.4 tons of food ...
The explosion of Space Shuttle Challenger, taken from the TV-3 camera. At T+72.284, the right SRB pulled away from the aft strut that attached it to the ET, causing lateral acceleration that was felt by the crew. At the same time, pressure in the LH2 tank began dropping. Pilot Mike Smith said "Uh-oh," which was the last crew comment recorded.