The Vera C. Rubin Observatory used its 3.2-billion-pixel camera to combine hundreds of exposures into one exceptionally deep image containing more than 500,000 galaxies and 50,000 foreground stars.
The real significance is not merely the record-sized photograph: Rubin will repeatedly image this same region during its ten-year survey, allowing astronomers to detect changes such as supernovae, study extremely faint and distant galaxies, and reconstruct how galaxies evolved over billions of years. timesofindia.indiatimes.com