![]() ![]() Originally mentioned by Edwin Hubble in 1936 as a part of the Hubble Sequence. Herein, stars appear in a pinwheel pattern, revolving the spiral nucleus from all edges. Spiral galaxies consist of flat and rotating discs that have prominent spiral arms. A spiral setting of space particles and dark matter, held together by the force of gravity is what defines a spiral galaxy. Let us get started.Īll galaxies consist of stars, dust, gas particles, and dark matter. In this blog, we will be looking at the concept of Spiral Galaxy in depth. An irregular galaxy has an amorphous appearance. The third of all types, irregular galaxies have no regular shape and have oddly spread stars and dark matter that are bound together by the force of gravity. While an elliptical galaxy is spherical in shape, a spiral galaxy consists of flat and rotating discs that have prominent spiral arms. Elliptical galaxies are oval or spherical in shapes and have randomly moving stars with no standard rotation. The 3 types of galaxies are - Elliptical, Spiral, and Irregular. Broadly, there are 3 types of galaxies that are known to astronomists so far. With millions of stars and numerous planets revolving around each other with the help of space orbits, galaxies in the universe have for long occupied the interest of millions of astronomers and space scientists since time immemorial.įor instance, the Milky Way is a galaxy that we live in along with 7 other planets and millions of stars.Īs scientists suggest, there are around a billion more galaxies other than the Milky Way that humans live in. Scientists suggest that most of the galaxies in the universe have enormous black holes in the center. Don't you want to know how big the universe is, do you? Follow the link.Ī galaxy is defined as a collection of a million-trillion dust and gas particles and dark matter that are bound together by the force of gravity. Anything beyond this planet is still getting explored.Įven though the Milky Way, the galaxy we live in, has been explored, there remain about a million galaxies that are out there in the universe. Unlike Earth, all other planets are lifeless which implies that Earth is the sole planet with a supportive environment for the existence of humans. Astronomy, defined as the study of the universe beyond Earth’s atmosphere, has helped humans discover and explore what exists beyond the atmosphere of our planet. The universe is a vast space for humans to discover.
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