In this photo, optical engineer Bente Eegholm inspects the surface of the primary mirror for NASA's Nancy Grace Roman Space Telescope. This 7.9-foot (2.4-meter) mirror is a major component of the ...

Since its deployment, the James Webb Space Telescope has been fine-tuned by experts to maintain its powerful optical ...

NASA's Nancy Grace Roman Space Telescope is one giant step closer to unlocking the mysteries of the universe. The mission has ...

The world’s largest optical mirror was successfully installed on a support system prototype for the first time to validate ...

NASA's James Webb Space Telescope is the largest and most powerful telescope ever launched to space. Its mirror is composed of 18 individual segments that have been aligned so accurately, that they ...

World’s largest optical mirror successfully installed on support system prototype for the first time to validate telescope’s extraordinary performance. Installation of one of GMT’s 8.4-m-diameter ...

Each of the ELT’s custom mirrors is a feat of optical design. Dr Vernet describes the 14ft (4.25m) convex M2 mirror as “a piece of art”. But perhaps the M1 and M4 mirrors best express the ...

Space-based telescopes are remarkable. Their view isn't obscured by the weather in our atmosphere, and so they can capture ...