Respuesta :
(1) Answer is C – Irregular galaxy
This type of galaxy does not have a clear shape. It contains high amount of young stars, gas and dust. Among the gases, hydrogen is the most abundant gas. It causes to form new stars.
(2) Answer is A – Milky way
(3) Answer is B – Elliptical galaxy
These types of galaxies have a clear shape as ellipsoidal shape. Elliptical galaxies have less number of stars and dust. The formation of new stars is low. Hence, the brightness is low. According to Edwin Hubble, elliptical galaxy is one of three classes of galaxies.
the Milky Way- arms extend from a core full of black holes
elliptical galaxy- contains most older stars with a red color
irregular galaxy- contains dust, gas, and young stars