The Hubble Deep Field, shown here, is a patch of sky in the constellation of Ursa Major the Great Bear. It was originally chosen because it was an empty and apparently blank patch of sky - so no ...

This image of the galaxy cluster Abell 2744 is from the Frontier Fields project, using natural gravitational lenses and ...

Edwin Hubble's groundbreaking discovery of the expanding universe a century ago, while working at Carnegie Observatories, revolutionized the understanding of the cosmos, revealing the Milky Way as ...