Planetary science

Artist's impression of the simulations performed in this study. Jupiter on the left, Saturn on the right. Credit: Yuri I. Fujii/L-INSIGHT [Kyoto University], Illustrator: Shinichiro Kinoshita

New study: Ancient magnetic fields may explain the difference between Jupiter's moons and Saturn's moons

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Simulations by researchers from Japan and China suggest that Jupiter's strong magnetic field created a void in the disk around it and preserved large moons, while at Saturn a weaker field led to a more sparse system dominated by
The dry delta in the Yezre crater preserves evidence of ancient water flow, and the new study links the clays found in the area to persistent warm, wet climate conditions on ancient Mars. Credit: NASA.

New study: Ancient Mars may have been warm, rainy, and suitable for life

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Analysis of clay pebbles collected in Jezero Crater by the Perseverance probe indicates that at least parts of ancient Mars experienced mild, wet, and continuous conditions—not just brief thaw events in a frozen environment.
Schematic illustration of how the impact that created the South Pole-Aitken Basin altered the lunar crust and mantle, leading to the loss of volatiles during the event. Credit: Illustration by Prof. Heng-Si Tien

Groundbreaking research: The giant impact that created the South Polar Basin changed the interior of the moon, not just the surface

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Analysis of samples collected by China's Chang'e-6 spacecraft reveals a unique geochemical signature indicating a massive loss of volatiles from the lunar mantle – and offers a new explanation for the mysterious asymmetry between the near and far sides
A carbonaceous meteorite is about to crash into Earth. Illustration: depositphotos.com

Scientists may have solved a space rock mystery that could change our understanding of the beginnings of life

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An international study has found that carbon-rich meteorites are rare on Earth because they break up in space or burn up in the atmosphere, which could change our understanding of the origin of life.
El Médano 128 meteorite, a regular chondrite (L group), was found in the Atacama Desert in 2011 by a team of researchers from the Research and Teaching Center for Environmental Geosciences (CEREGE - University of Aix-Marseille/CNRS/INRAE/IRD). Credit: © Jérôme Gatakzka, CNRS, CEREGE

70% of the meteorites that landed on Earth came from a small number of collisions in the asteroid belt

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A new study reveals that most of the meteorites on Earth were formed as a result of collisions that occurred in the asteroid belt in the last tens of millions of years. The discovery provides new insights into the origins of meteorites and the possible threat to Earth
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