To date, many planets orbiting stars other than the Sun have been discovered. The "exoplanets" show that planet formation is a universal process associated with the birth of a star. On the other hand, the 3rd planet of the solar system that nurtures life, "Earth", is unique among the planets. "When" and "How" was the earth's personality irreplaceable for a life determined? Our group is trying to decipher the history of the universe from extraterrestrial materials using an isotope microscope instead of a conventional observational approach using a telescope.