Solar systemís youth gives clues to planet search
Carnegie Institution of Washington said:
One way to study the solar systemís formative period is to look for samples of small crystalline particles that were formed at high temperatures but now exist in icy comets. Another is to analyze the traces of isotopesóversions of elements with the same number of protons, but a different number of neutronsófound in primitive meteorites. These isotopes decay and turn into different, so-called daughter, elements. The initial abundances of these isotopes tell researchers where the isotopes may have come from, and can give clues as to how they traveled around the early solar system.