Arisa Nakano, lead author of the paper (IMAGE) Hokkaido University Caption Arisa Nakano, lead author of the paper (Photo: Yoichiro Hoshino). Credit Yoichiro Hoshino Usage Restrictions This image is copyrighted but may be used to report this press release if credited as instructed. 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.