About the supermassive black hole that lurks at the center of our Galaxy.

 

• Before knowing about Black Hole, we need to know about gravitational pull. Every object in the Universe attracts every other object.
• When we are on Earth no energy is required, but to send a rocket into space, the amount of energy, fuel required says how strong Earth’s gravitational force is.
• If Earth has such a force, think about what could be the force of the SUN, which makes objects revolve around it.
• Sun can attract objects around it. It cannot attract objects beyond our Solar System.
• Compared to Earth, Sun has the strongest gravitational pull. Compared to Sun, there are many big stars in the Universe and greater things. One of them is called Black Hole.
• When it comes to Black Holes, nothing can escape them not even light.
• Only Black Hole has the capacity to attract light. This means the gravitational pull of the Black Hole is greater than the speed of light. Anything that comes near Black Hole must enter into it and to escape from it, we need to travel faster than the speed of light.

We know the moon revolves around the planet, planets revolve around Sun. Sun is not stationary, it also rotates. Along with Sun entire solar system is rotating. Our solar system is one among many galaxies in the Universe.

Research proves there is a supermassive black hole at the center of our Milky way galaxy. The below picture is for reference:

The supermassive black hole is called as Sagittarius-A/ sgr A* and because of sgr A* our milky way looks like a whirlpool.

Millions of stars in a milky way revolve around it due to its gravity. Even though it is the strongest black hole and located at the center, we are not attracted to it. It's because black holes have a limit and it is known as Event Horizon. It can only attract objects which are inside the event horizon.

Here is the size of a Supermassive Blackhole compared to our Solar system.