Edwin Hubble
Discovered that the universe extends far beyond the Milky Way galaxy and is continuously expanding, fundamentally reshaping cosmology
Before this astronomer's discoveries, many scientists believed our own galaxy comprised the entire universe; his observations revealed instead an unimaginably vast cosmos in constant, ongoing expansion.
Beyond the Milky Way
Hubble demonstrated in the 1920s that certain distant nebulae were actually separate galaxies entirely outside our own Milky Way, dramatically expanding the known scale of the universe.
Discovering an Expanding Universe
Hubble's observations revealed that distant galaxies are moving away from us, with more distant galaxies receding faster, evidence supporting the theory of an expanding universe.
The Foundation for the Big Bang Theory
Hubble's discovery of cosmic expansion provided crucial observational evidence supporting what would become known as the Big Bang theory of the universe's origin.
A Telescope Named in His Honor
The Hubble Space Telescope, launched in 1990, was named in his honor and has continued producing groundbreaking astronomical observations and imagery for over three decades.
