The region was imaged by NASA's Hubble Space Telescope in 1995 and is equivalent in apparent size to a dime held 75 feet away. The region is so small that only a few foreground stars from the Milky Way are visible in the image. If the Hubble Deep Field is typical of the rest of space, then it can be extrapolated that there are hundreds of billions of galaxies, each containing billions of stars within the visible universe alone.
Three years later, a region in the south celestial hemisphere was imaged in a similar way and yielded similar pictures. It was dubbed Hubble Deep Field South. The similarities between the two regions strengthened the belief that the Universe is uniform over large scales and that Earth occupies a typical region in the Universe. The original Hubble Deep Field has been retrospectively renamed the Hubble Deep Field North by some.