Martian meteorite upended ideas about the formation of the planets
Scientists at the University of California, Davis examined an old Martian meteorite that hit Earth in 1815 and found that meteorites delivered volatile elements to the forming planet much earlier than previously thought. The results of the study are published in the journal Science.
The main hypothesis about the formation of planets was that the planets collect the main elements and substances from the nebula around the young star. However, a careful study of the Chassigny meteorite, which fell to Earth in northeastern France in the 19th century, cast doubt on this assumption. To do this, experts analyzed this cosmic body using new technologies and methods.
It turned out that the isotopes of krypton in the meteorite correspond to the isotopes of chondrite meteorites, and not the solar nebula. This means that meteorites brought various elements to Mars earlier than scientists thought. In addition, it turned out that the atmosphere of the planet could not have been formed only due to the release of gases from the mantle, since then the samples would have had a different composition. Most likely, Mars formed the atmosphere from the solar nebula after the magma cooled.
In June 2022, the Foundation for Applied Molecular Evolution announced that ribonucleic acid (RNA), which is the basis for all life, is randomly formed on the surface of basalt glass, this igneous rock is still found on Mars.