Isotopic analysis of meteorites suggests Earth and the rest of the solar system formed about which time?

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Multiple Choice

Isotopic analysis of meteorites suggests Earth and the rest of the solar system formed about which time?

Explanation:
Isotopic dating of meteorites is how we pinpoint when the Solar System began. The oldest solid material we find in meteorites, calcium-aluminum-rich inclusions, formed at the very start of the Sun–planets system. By measuring radioactive decay with clocks like uranium–lead dating and Pb-Pb chronometry, scientists consistently arrive at about 4.57 billion years ago for the formation of the solar nebula and the birth of planets. This timing is supported by multiple isotope systems across meteorites. The other ages listed would place the start either well after or before the Solar System’s birth, which isn’t supported by the dating evidence. So the formation time is about 4.57 billion years ago.

Isotopic dating of meteorites is how we pinpoint when the Solar System began. The oldest solid material we find in meteorites, calcium-aluminum-rich inclusions, formed at the very start of the Sun–planets system. By measuring radioactive decay with clocks like uranium–lead dating and Pb-Pb chronometry, scientists consistently arrive at about 4.57 billion years ago for the formation of the solar nebula and the birth of planets. This timing is supported by multiple isotope systems across meteorites. The other ages listed would place the start either well after or before the Solar System’s birth, which isn’t supported by the dating evidence. So the formation time is about 4.57 billion years ago.

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