LIGO Squeezing (IMAGE) Massachusetts Institute of Technology Caption A look at the technology that creates squeezed light in LIGO's vacuum chamber. The picture was taken from one of the chamber's viewports at a time when the squeezer was operational and pumped with green light. Credit Image credit: Georgia Mansell/LIGO Hanford Observatory Usage Restrictions Images are are made available to non-commercial entities, press and the general public under a Creative Commons Attribution Non-Commercial No Derivatives license. You may not alter the images provided, other than to crop them to size. A credit line must be used when reproducing images. 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.