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Articles sur Planetary science

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Scientists still debate the origins of Earth’s life-sustaining elements. BlackJack3D/E+ via Getty Images

Earth may have had all the elements needed for life within it all along − contrary to theories that these elements came from meteorites

Scientists analyzing isotope ratios have found that many of the elements that make up life could be left over from Earth’s formation.
Perspective view of a lobate scarp on Mercury named Carnegie Rupes, colour-coded according to surface altitude. The crater near the middle is nearly 40 km across. NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

Mercury: shrinking planet is still getting smaller – new research

Mercury has shrunk by7 km. Most of this happened long ago, but now we have evidence that it continues.

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