please write the sci-fi space travel short story No copy paste from any book and no Goøgle
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Jaise apki Marzi..
Aap ldki ho ya ldka ya ..
The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different. ... Atoms of the same element (i.e., atoms with the same number of protons) with different numbers of neutrons are called isotopesAtoms of the same element that have different numbers of neutrons
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