The Milky Way is the cosmic galaxy system that contains our Solar System. It’s called milky due to the band of light found in the night sky shaped from stars that can’t be exclusively recognized by a naked eye. The wonder of the night sky above your head is the representation of the bright cloudy bands of stars that make up the Milky Way galaxy. Our galactic home is immense and delightful, however, numerous mysteries and riddles about it are still hidden.
After years of attempts, space experts still can’t seem to decide precisely how much our galaxy weighs. However, it is estimated ranging from anywhere between 700 billion and 2 trillion times the mass of our sun.
Think the Milky Way is big? It’s puny compared to M87, an elliptical galaxy 980,000 light years in diameter. The Milky Way is only 100,000 light years in diameter. As, we can see M87, an elliptical galaxy 980,000 light years in diameter. On the other hand, another galaxy Hercules A is 1.5 million light-years across in diameter.
It is also important to note that some portion of our galaxy is milky like a large portion of a cosmic system’s mass which is undetectable. It’s the Dark matter, a confounding substance that radiates no light of any sort makes up around 85 percent of our Milky Way. So just including the stars we cannot exactly estimate the massiveness of our galaxy, the Milky Way.
Do You Know How Massive And Big Is The Milky Way Galaxy?
Since we reside inside the Milky Way Galaxy, it is unimaginable for us to take a photo of its winding and spiral structure. However, we do realize that our Milky Way has a winding nature from perceptions produced by various astronauts, though whether or not it is a barred spiral is still being debated. To represent this, the beautiful spiral galaxy Messier 74 was used, as it thought to be a similar galaxy to our Milky Way.
Following the pictures taken of the real Milky Way by the Satellite COBE, it was seen as a disk and center region of our Galaxy are readily recognizable. Those pictures make the Milky Way seem substantially more cosmic system like and less like the smirch of stars we see extending over our night sky. It is conceivable to envision what our Milky Way may look like looking down on it from outside.
The Milky Way is about 1,000,000,000,000,000,000 km (about 100,000 light years or about 30 kiloparsec) across in diameter. The Sun does not lie near the center of our Galaxy. It lies about 8 kiloparsec (about 2.468542065024 x 10+17 kilometer) from the center on what is known as the Orion Arm of the Milky Way.
The Voyager shuttle is traveling far from the Sun at a rate of 17.3 km/s. If Voyager somehow managed to move to the focal(center) point of our Galaxy, it would take over 450,000,000 years to travel. In the event that if it could go at the speed of light(which is actually impossible due to Special Relativity), it would, in any case, take over 26,000 years to arrive back to the earth.
In simple words, at the speed rate of 17.3 km/s, it would take Voyager over 1,700,000,000 years to navigate the whole length of the Milky Way. Even traveling at the speed of light, it would take nearly a hundred thousand years.
The universe and the Milky Way.
Today we are fairly confident that the Milky Way is probably between 100,000 and 150,000 light-years across. The observable Universe is, of course, much larger. According to current thinking, it is about 93 billion light years in diameter.
So in simple words, you can simply imagine how huge is the universe is and how smaller the Milky Way galaxy is in contrast to the enormous universe.
We can conclude it like this that, our earth is present as the third planet of our solar system, is a part of the thousand and thousands of other planetic systems that are present in our galaxy(The Milky Way) and not only this, thousands and millions of galaxies groups together to form a super-galaxy and finally uncountable numbers of super-galaxies come together to form the whole universe.
Can there be anything much much bigger than the concept of the universe? Can there be anything like that of the super-universe which will be comprised of numerous universes together? These questions are still a matter of curiosity to the mankind.