That secondary mirror, in turn, bounced the light (and thus the image seen) into a convex eyepiece lens built into the side of the tube. This was the first working reflecting telescope.

The telescope could provide clues about how the first stars formed and how chemical signatures from exoplanets could point to the building blocks of life. This image, released Monday, was the ...

Astronomers estimate 50,000 sources of near-infrared light are represented in this image from NASA’s ... [+] James Webb Space Telescope ... having formed from multiple galaxy clusters piling ...