HL Tauri (IMAGE) National Institutes of Natural Sciences Caption This is an artist's concept of HL Tauri. The star is surrounded by the disk (shown in red) and thick envelope. The star ejects a bipolar collimated jet. Credit Yin-Chih Tsai/ASIAA EPO 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.