By using very powerful telescopes to scan the sky.
Astronomer.
satelites.
Astronomer.
The scientist who discovered distant galaxies is Edwin Hubble. In the 1920s, Hubble observed that galaxies were moving away from us, leading to the formulation of Hubble's Law, which describes the expansion of the universe. His work fundamentally changed our understanding of the cosmos and established galaxies as separate entities beyond the Milky Way.
Edwin hubble
A scientist who studies celestial bodies such as planets, stars , and galaxies.
Do you homework yourself!
spiral galaxies elliptical galaxies and irregular galaxies
That is impossible to answer because scientist don't know ALL the galaxies.
They study distant galaxies because they want to know whats out in other galaxies and how many planets it has
Beatrice Muriel Hill Tinsley was a New Zealand scientist whose research made fundamental contributions to our understanding of how galaxies evolve with time.
according to scientist barey there is gravity everywhere even in other galaxies