Plasma Thruster: New Space Debris Removal Technology (1 of 2) (image) Tohoku University Share Print E-Mail Caption A concept for space debris removal by bi-directional momentum ejection from a satellite. Credit Kazunori Takahashi. Usage Restrictions Copyright: Kazunori Takahashi. Share Print E-Mail 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.