top-down view of T2 lidar (IMAGE) DOE/Brookhaven National Laboratory Caption A top-down view of the lidar. A laser fires from the aperture on the right and then the telescope aperture on the left opens its “eye” briefly to collect photons backscattered from the atmosphere. Credit Kevin Coughlin/Brookhaven National Laboratory Usage Restrictions Approved for use with stories about this research 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.