barred spiral galaxies are galaxies like the milky way they have a bulge of stars at the center with arms extending outwards like a pinwheel. bars are usually found in between one third and two thirds of all spiral galaxies. bars generally affect the motion of the stars and interstellar gas and can affect spiral arms.made up of gas and dust many show a narrow ring of stars near the outer end of starsit is a super giant galaxy
Elliptical Galaxies are spherical or oval with no trace of spiral arms. elliptical galaxies are smaller and contain less dust and gas.
Irregular galaxies have no particular shape. they are among the smallest galaxies and are full of gas and dust.highly flat in size it ranges from millions to trillions of stars.very uncommononce was a spiral galaxy or elliptical