In another major milestone for the James Webb Space Telescope, a motor-driven tripod unfolded as planned Wednesday, moving a 2.4-foot-wide secondary mirror into position to reflect collected starlight ...

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An enormous piece of glass-ceramic has been cast for the secondary mirror of the European Southern Observatory's (ESO) Extremely Large Telescope, entering a year-long cooldown and heat-treatment ...

The James Webb Space Telescope has successfully deployed the tripod that holds the observatory’s secondary mirror, in what is a critical milestone for the mission. Webb launched on Christmas Day, but ...

The sole secondary mirror and another primary mirror that will fly aboard NASA’s James Webb Space Telescope arrived at NASA’s Goddard Space Flight Center in Greenbelt, Md., on Nov. 5, 2012. In this ...

One Maunakea telescope has been partially removed, but the building that housed it will remain standing until next year. After months of delays, workers began taking apart CSO’s telescope in June, and ...

Thirty days outbound from Earth, the James Webb Space Telescope will slip into its parking orbit nearly a million miles away on Monday, an ideal spot to scan the heavens in search of faint infrared ...

Everyone says it’s important to have a clear, concise mission statement. What Project Manager James Fanson, who leads the team building the Giant Magellan Telescope said about their work, may ...

Aug. 31—CANTON — A massive 11-foot-wide mirror, created in Canton, is installed at the Vera C. Rubin Observatory in Chile. The mirror will help scientists identify potentially harmful asteroids and ...

As it hurdles through space, NASA’s Webb telescope has successfully completed another step in its multi-month bootup process: it has deployed its secondary mirror. While secondary may sound less ...

An enormous piece of glass-ceramic has been cast for the secondary mirror of the European Southern Observatory's (ESO) Extremely Large Telescope, entering a year-long cooldown and heat-treatment ...