Abstract
Various kinds of crystals are contained in meteorites and comets in our solar system. They were formed in early solar system 4.6 billion years ago, and have unique features reflecting the peculiar crystal growth environment in space. It would be possible to imagine the history of our solar system by elucidating the origin of these cosmic crystals. In the present paper, we briefly review the traditional researches on formation of chondrules, which are submillimeter-sized, spherical-shaped grains consisting mainly of silicate material observed in chondritic meteorites. Then, we explain the relationship between the solidication texture of chondrules and the pattern formation of a supercooled melt droplet during rapid cooling.
