衛星形成のイメージ図 (IMAGE) National Institutes of Natural Sciences Caption 惑星形成時に,土星のようなガス惑星の周りをガスや塵が円盤状に取り巻き回転していた.この円盤の中で固体成分が集積して衛星が形成された. Credit Nagoya University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.