Edwin Hubble

View the biography of Edwin Hubble

The history of astronomy is a history of receding horizons.
We find them smaller and fainter, in constantly increasing numbers, and we know that we are reaching into space, farther and farther, until, with the faintest nebulae that can be detected with the greatest telescopes, we arrive at the frontier of the known universe.
Quoted in E Maor, To infinity and beyond (Princeton 1991)