Looking Down the Telescope Tube on FOXSI (image) NASA/Goddard Space Flight Center Caption Looking down the telescope tube on FOXSI the Focusing Optics X-ray Solar Imager reveals state-of-the-art optics that will help focus hard x-rays, which usually simply pass right through telescope mirrors. Credit NASA/S. Christe Usage Restrictions None 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.