This close-up picture shows a ceramic-like refractory inclusion (pink inclusion) still embedded into the meteorite in which it was found. Refractory inclusions are the oldest-known rocks in the solar system (4.5 billion years old). Analysis of the uranium isotope ratios of such inclusions demonstrates that a long-lived isotope of the radioactive element curium was present in the solar system when this inclusion was formed. The inclusion measures 1.5 centimers (.59 inches) in length. Credit: Origins Lab, University of Chicago
Uni of Chicago scientists have discovered evidence in a meteorite that a rare element, curium, was present during the formation of the solar system...
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