Radioactive dating moon rocks

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Radiometric Age Dating

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Lecture The Age of the Earth

Click to see full answer. Thereof, why is radioactive dating important? Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. The universe is full of naturally occurring radioactive elements. Radioactive atoms are inherently unstable; over time, radioactive "parent atoms" decay into stable "daughter atoms. Additionally, does radioactive dating determine absolute age? Absolute dating methods determine how much time has passed since rocks formed by measuring the radioactive decay of isotopes or the effects of radiation on the crystal structure of minerals.
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Dating The Moon

Radioactive iron in moon rocks collected by astronauts on NASA's Apollo missions suggests that a nearby supernova blasted Earth a few million years ago, according to a new study. This finding supports the idea that nearby stellar explosions may have influenced life on Earth, including the evolution of humans, the researchers said. Supernovas are powerful explosions from gigantic dying stars. These outbursts are visible all the way to the edge of the universe, and are bright enough to briefly outshine all of the other stars in their host galaxies. Previous research found that supernovas generate huge amounts of a mildly radioactive variety of iron known as iron, which these cataclysmic explosions spew out into space.
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How do we know the age of the surfaces we see on planets and moons? If a world has a surface as opposed to being mostly gas and liquid , astronomers have developed some techniques for estimating how long ago that surface solidified. Note that the age of these surfaces is not necessarily the age of the planet as a whole. On geologically active objects including Earth , vast outpourings of molten rock or the erosive effects of water and ice, which we call planet weathering, have erased evidence of earlier epochs and present us with only a relatively young surface for investigation.
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