Question

how are galaxy classified their shape

Answer 1

Astronomer Edwin Hubbleclassified galaxies into four major types: spiral, barred spiral, elliptical and irregular. Most of the nearby, bright galaxies are spirals, barred spirals or ellipticals. Spiral galaxies have a bulge at the center and a flattened disk containing spiral arms.

Answer 2

Hey mate here is your answer》》

These are classified with their planer structure and orientation, along with arms along which the stars reside. Most of the spiral galaxies have a large centre of gravitation or black hole. There are two explanations for the shape Spiral Galaxies posses. We all know that spiral galaxies are in the shape of disks.

Hope this answer will help you..《《