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SpaceX advanced the development of its Starship program with a series of high-altitude test flights designed to push the boundaries of rapid reusability and deep space travel
The name honors the nuclear physicist Yuri Oganessian
the result is awesome
Promethium Element Cube Personal Museum and matchesPromethium's atomic number is 61and its symbol is Pm. All of its isotopes are radioactive; it is extremely rare, with only about 500600 grams naturally occurring in Earth's crust at any given time. The discoverers proposed the name "promethium" (the spelling was subsequently changed), derived from Prometheus, the Titan in Greek mythology who stole fire from Mount Olympus and brought it down to humans, to symbolize "both the daring and the possible
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