Hubble is named after which astronomer?

Hubble is named after Edwin Hubble, the American astronomer whose observations helped establish that galaxies exist beyond the Milky Way.

Using the 100-inch Hooker Telescope at Mount Wilson Observatory, Hubble identified Cepheid variable stars in distant galaxies. These stars provided a way to estimate galactic distances, helping demonstrate that the universe extends far beyond our own galaxy.

Hubble also found that more distant galaxies generally recede faster, a relationship now associated with Hubble's law and the expansion of the universe. Georges Lemaître had published an earlier version of the expansion relationship, a historical detail sometimes missed in simplified accounts.

The telescope was named in Hubble's honor because of his lasting influence on extragalactic astronomy and observational cosmology. He was not an astronaut or an engineer, and the telescope is not named after the idea of the Hubble volume or Hubble's law alone.