Side-by-side photographic glass plates and images by James Webb show how telescope technology has evolved since the 1800s
In the 19th and early 20th centuries, astronomers cataloged the universe on glass photographic plates. Astronomers are still studying these plates, which serve as a record of the sky spanning nearly 100 years. Compared to faint objects stamped on plates, images from the James Webb Space Telescope show dramatic improvements in telescope technology. Loading Something …