New NASA-Keck Observatory Partnership (IMAGE) W. M. Keck Observatory Caption The twin 10-meter Keck Observatory telescopes are the most scientifically productive optical and infrared telescopes on Earth. Located on Maunakea, Hawaii, the observatory works closely with several of NASA's observatories. Pictured here (not to scale) from the top, going clockwise, are the James Webb Space Telescope (not yet launched), Hubble Space Telescope, Chandra X-ray Observatory, and Spitzer Space Telescope. Credit W. M. Keck Observatory Usage Restrictions None License Licensed 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.