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Astatine-218 was the first astatine isotope discovered in nature. [113] Astatine-219, with a half-life of 56 seconds, is the longest lived of the naturally occurring isotopes. [6] Isotopes of astatine are sometimes not listed as naturally occurring because of misconceptions [103] that there are no such isotopes, [114] or discrepancies in the ...
The Sun's core temperature, at which PP is more efficient In astrophysics , stellar nucleosynthesis is the creation of chemical elements by nuclear fusion reactions within stars . Stellar nucleosynthesis has occurred since the original creation of hydrogen , helium and lithium during the Big Bang .
41 of the 118 known elements have names associated with, or specifically named for, places around the world or among astronomical objects. 32 of these have names tied to the places on Earth, and the other nine are named after to Solar System objects: helium for the Sun; tellurium for the Earth; selenium for the Moon; mercury (indirectly), uranium, neptunium and plutonium after their respective ...
The sun is acting a little sus Footage of a “massive polar vortex” recorded by NASA’s Solar Dynamics Observatory on Feb. 2, went viral this week, and scientists aren’t exactly sure what ...
The first satellites designed for long term observation of the Sun from interplanetary space were NASA's Pioneers 6, 7, 8 and 9, which were launched between 1959 and 1968. These probes orbited the Sun at a distance similar to that of Earth, and made the first detailed measurements of the solar wind and the solar magnetic field.
The more complete construct is like "astatine-216, -217 and -218". The hyphen indicates the omission of "astatine" in the listing, from the name pattern. Without prefixed hyphen "217" suggests a stand-alone word (noun), which it is not. Plain "217" is not the way "astatine-217" is written in sources. -DePiep 08:52, 24 March 2015 (UTC)
Solar farms in space could harness the power of the sun, unaffected by bad weather, cloud cover, nighttime or the seasons. This wild, futuristic space plan could help save the world. But some say ...
Astatine is also thought to be capable of forming cations in salts with oxyanions such as iodate or dichromate; this is based on the observation that, in acidic solutions, monovalent or intermediate positive states of astatine coprecipitate with the insoluble salts of metal cations such as silver(I) iodate or thallium(I) dichromate.