Shooting stars (IMAGE) University of Tokyo Caption The observatories are 173 km apart. The relatively close distance allows more accurate correlation of their data. Credit © 2020 Ohsawa et al. 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.