Hubble quickly realized that the vast majority of galaxies have only a small number of shapes a classification based on their optical appearance or morphology is limited to four fundamental types of.
Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance there are several schemes in use by which galaxies can be classified according to their morphologies, the most famous being the hubble sequence, devised by edwin hubble and later expanded by gérard de. Galaxy classification galaxies show a vast range of forms, and faced with any such situation we would like to seek any underlying patterns this allows a compact description of individual objects, and if we are fortunate will lead to physical understanding (the prototype system of this kind is the mk stellar classification.
Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance there are several schemes in use by which galaxies can be classified according to their morphologies, the most famous being the hubble sequence, devised by edwin hubble and later expanded by gérard. How can the answer be improved.
Galaxies come in many different shapes and sizes ranging from dwarf galaxies with as few as 10 7 stars, to giants with 10 12 stars galaxies range from 1,000 to 100,000 parsecs in diameter and are usually separated by millions of parsecs edwin hubble invented a classification of galaxies and.
Galaxy - types of galaxies: almost all current systems of galaxy classification are outgrowths of the initial scheme proposed by the american astronomer edwin hubble in. 1 elliptical galaxies elliptical galaxies are shaped like a spheriod, or elongated sphere in the sky, where we can only see two of their three dimensions, these galaxies look like elliptical, or oval, shaped disks.
Edwin hubble developed a galaxy classification scheme this classification is based on our perspective from earth and not on the actual shape spiral galaxies. The hubble sequence is a morphological classification scheme for galaxies invented by edwin hubble in 1926 it is often known colloquially as the hubble tuning fork diagram because of the shape in which it is traditionally represented. Types and classification of galaxies there are three main types of galaxies: elliptical, spiral, and irregular two of these three types are further divided and classified into a system that is now known the tuning fork diagram. Classifying galaxies spiral galaxies classification is an important first step in organizing the richness of the extragalactic universe.