Physics, 13.09.2019 01:20, rave35

Every 4.5 billion years, half of the atoms in a sample of uranium-238 will undergo radioactive decay and become atoms of lead-206. suppose you lived in another planetary system around a faraway star and found meteorite that was originally made of uranium-238, but is now one-quarter uranium-238 and three quarters lead-206. what would be your best estimate of the planetary system?

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Every 4.5 billion years, half of the atoms in a sample of uranium-238 will undergo radioactive decay...