Although it has been nearly two years since Japanese mission Hayabusa2 returned to Earth, samples from asteroid Ryugu are still revealing valuable information about the history of the early solar system. A new study reveals the isotopic composition of zinc and copper of asteroid Ryugu. According to
Japan’s Hayabusa2 mission to asteroid Ryugu. Credit: JAXA, samples from asteroid Ryugu are still revealing valuable information about the history of the early solar system. A new study reveals the isotopic composition of zinc and copper of asteroid Ryugu. According to the isotopic signatures, Ryugu’s composition is close to Ivuna-like carbonaceous chondrites, and Ryugu-like material from the outer solar system accounts for ~5-6% of Earth’s mass.
. It brought back 5 grams of fragments from the asteroid Ryugu, offering the possibility of analyzing samples unaltered by their arrival and stay on Earth.
The international team showed, in a study published on December 12th, 2022 in the journal Nature Astronomy and led by Marine Paquet and Frédéric Moynier, cosmochemists at the IPGP, that the isotopic ratios of copper and zinc in the samples from Ryugu were identical to CI chondrites but different from all other types of meteorites.
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