The NASA/ESA/CSA James Webb Space Telescope has topped itself once again, delivering on its promise to push the boundaries of the observable universe closer to cosmic dawn with the confirmation of a ...

This video explains how scientists estimate the size of the observable universe, what “radius” means in cosmology, and why the universe may extend far beyond what we can see. Golden Globes 2026: The ...

In a galaxy far, far away, there lie clues to the cosmic dawn—the first few hundreds of millions of years in our 13.8-billion-year-old universe’s early history. On Wednesday astronomers on announced ...

This video explains how scientists estimate the size of the observable universe and what we mean by its “radius,” using clear examples grounded in modern cosmology. Thousands across the country march ...