What are the basic shapes into which astronomers classify most galaxies?

irregular
elliptical
cluster
spiral
spherical

select more than 1 !

The answer is irregular, elliptical, spiral.

The correct answer is option A - irregular  , Option B- elliptical and option D - Spiral

Reason -

According to astronomer Edwin Hubble, the galaxies in our universe have four classes namely - spiral, barred spiral, elliptical and irregular.

Spiral galaxies have a bulge shape at the center while the edges are flattened, A barred spiral galaxy has a bar-shaped stars' group that move around the center of the galaxy, Elliptical galaxy has  smooth, oval-shaped appearance without disk and arm and Irregular galaxies are neither spiral nor elliptical.  

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