Do you know in what galaxy we live in? Can you imagine that our big Earth is really a small part of the Galaxies? These are the following facts about the Galaxy which probably give you information. Stars, stellar remnants, an interstellar medium of gas and dust, and dark matter are bounded by gravitation into a system called Galaxy. Galaxy is categorized according to their shape, usually referred to as their visual morphology. To know more about it, let’s check the interesting facts below.
Facts about the Galaxy 1: Etymology
The Greek term galaxias (????????, “milky one”), orkyklos (“circle”) galaktikos (“milky”) are the origin of the word Galaxy. This term refers to its appearance as a lighter colored band in the sky.
Facts about the Galaxy 2: Nomenclature
From tens of thousands of the galaxies found, only a few have been given a well-established name. Astronomers gave those names based on certain catalogues. All of the well-known galaxies appear in one or more of these catalogues but each time under a different number. Find more facts about The Flute here
Facts about the Galaxy 3: Milky Way
The research about Milky Way was done by different astronomers. One of astronomers named al-B?r?n? (973–1048) proposed the Milky Way galaxy to be “a collection of countless fragments of the nature of nebulous stars. In the 14th century, the Syrian-born Ibn Qayyim proposed the Milky Way galaxy to be “a myriad of tiny stars packed together in the sphere of the fixed stars.”
Facts about the Galaxy 4: Greek Mythology about Milky Way
The term Milky Way was believed from Greek Mythology about Zeus, Hera and Heracles. The story told about the Zeus who put his infant named Heracles on Hera’s breast while she is asleep so that the baby will drink her divine milk and will thus become immortal. When Hera wakes up and finds an unknown baby, she pushes the baby away. The jet of her milk sprays the night sky, producing the faint band of light known as the Milky Way.
Facts about the Galaxy 5: Types and Morphology
There are three main types of galaxies: elliptical, spirals, and irregulars. While Hubble sequence classified the galaxies based upon visual morphological type.
Facts about the Galaxy 6: Spirals Galaxy
It is named spiral galaxy because of its spiraling pinwheel shape. It consists of a rotating disk of stars and interstellar medium, along with a central bulge of generally older stars. Extending outward from the bulge are relatively bright arms. One of the examples of spiral galaxy is the Whirlpool galaxy.
Facts about the Galaxy 7: Dwarf Galaxies
It seems that the most galaxies in the Universe are dwarf galaxies. Its size is about one hundredth the size of the Milky Way. This type of galaxy contains only a few billion stars.
Facts about the Galaxy 8: Interaction between Galaxies
The interaction between galaxies is quite often. In the galaxy evolution, the interaction between galaxy play important role. When two galaxies pass directly through each other and have sufficient relative momentum not to merge, the collisions will occur.
Facts about the Galaxy 9: Starbust
Starbust happens when the galaxies form stars at an exceptional rate. It commonly happened during the early history of the Universe.
Facts about the Galaxy 10: Formation
The Big Bang theory becomes the basic of Current cosmological models of the early Universe. Theories of Formation could be divided into two categories: top-down and bottom-up.
These are the following facts about the Galaxy. Hope that facts will give you more information and knowledge.