galileo was the first person to classified galaxies into groups according to their structure.
galileo was the first person to classified galaxies into groups according to their structure.
who is the first person to classified galaxies into groups according to their structure?
galileo
elliptical galaxies range in size from tens of millions to over one hundred trillion stars. originally, edwin hubble hypothesized that elliptical galaxies evolved into spiral galaxies, which was later discovered to be false, although the accretion of gas and smaller galaxies may build a disk around a pre-existing ellipsoidal structure.









































stars found inside of elliptical galaxies are on average much older than stars found in spiral galaxies.









































section::::examples.









































bullet::::- m49









































bullet::::- m59









































bullet::::- m60 (ngc 4649)









































bullet::::- m87 (ngc 4486)









































bullet::::- m89









































bullet::::- m105 (ngc 3379)









































bullet::::- ic 1101, one of the largest galaxies in the observable universe.
elliptical galaxy
merging galaxies are the later evolutionary stages of two or more interacting galaxies that have orbits and dynamics conducive to a final merger. five m classified galaxies are in the atlas.









































starburst galaxies undergo intense star formation that is well in excess of normal rates. large numbers of young stars (o and b spectral type) exist and the dust content can be extremely high. three s classified galaxies are in the atlas.
multiwavelength atlas of galaxies