Milky Way Galaxy

MILKY WAY GALAXY

Stars!!

Stars this is a word where our eyes go towards the sky after hearing of that particular word. So today let's see more about Milky Way Galaxy a good known galaxy for numerous billions of stars.

Before we start let's have a closer look on its profile.

Type:- Barred Spiral

Diameter:- 100,000 - 180,000 light years 

Mass:- 800 - 1500 Million tons

Age:- 13.6 Billion light years

No. of Stars:- 100-450 billion stars

Constellation:- Saggitarius
No. of galaxies:- 40 Galaxies

The Milky Way Galaxy is our home galaxy in the universe. It is a fairly typical barred spiral with four major arms in its disk, at least one spur, and a newly discovered outer arm. The galactic centre, which is located about 26,000 light-years from Earth, contains at least one supermassive black hole, and is crossed by a bar. The Milky Way began forming around 12 billion years ago and is part of a group of about 50 galaxies called the Local Group. The Andromeda Galaxy is part of this group as are numerous smaller galaxies, including the Magellanic Clouds. The Local Group itself is part of a larger gathering of galaxies called the Virgo Supercluster of galaxies.

MILKY WAY GALAXY

Interesting facts about Milky Way Galaxy

• The Milky Way began as a series of dense regions in the early universe not long after the Big Bang. The first stars to form were in globular clusters that still exist. They are among the oldest stars formed in the Milky Way region.
• The Milky Way has grown by merging with other galaxies through time. It is currently acquiring stars from a very small galaxy called the Sagittarius Dwarf Spheroidal, as well as gobbling up material from the Magellanic Clouds.
• The Milky Way moves through space at a velocity of about 552 kilometres per second (343 miles per second) with respect to the Cosmic Microwave Background radiation.
• Milky Way’s central core contains a supermassive black hole. It is commonly referred to as Sagittarius A*. It contains the mass of about 4.3 million Suns
• Our galaxy will collide with Andromeda Galaxy in about 5 billion years. Some astronomers refer to our two galaxy as a binary system of giant spirals.
• The stars, gas and dust of the Milky Way all orbit the centre at a rate of about 220 kilometres per second. This constant rate for all stars at different distances from the core implies the existence of a shell of dark matter surrounding our galaxy.
• The Milky Way contains over 200 billion stars, and enough dust and gas to make billions more.
• Milky Way is a part of a cluster of galaxies called the Local Group, which comprises about 40 galaxies. The Local Group is, in turn, a part of a Local Supercluster, which encompasses several clusters of galaxies like the Local Group. One Local Supercluster is about 10 million light-years from the other.

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