PUNCH WFI (IMAGE) Southwest Research Institute Caption On November 17, 2023, the Polarimeter to UNify the Corona and Heliosphere (PUNCH) mission achieved an important milestone, passing its internal system integration review, clearing the mission to start integrating the four observatories. Three of the four PUNCH spacecraft will include SwRI-developed Wide Field Imagers (pictured) optimized to image the solar wind. The dark baffles in the top recess allow the instrument to image objects over a thousand times fainter than the Milky Way. Credit Southwest Research Institute Usage Restrictions Images/Videos may be used by the public for educational and informational purposes only. License Original 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.