the supermassive black hole

NASA published stunning photos in the center of the Milky Way
NASA on March 23 released a stunning image of the center of the Milky Way galaxy, where there is a supermassive black hole Sagittarius A *.
The supermassive black hole closest to Earth glows intensely
The supermassive black hole in the center of the Milky Way swallows more matter and glows abnormally.
The black hole can only expand to 50 billion times the mass of the Sun, it is impossible to 'eat to grow'
Space black holes cannot expand indefinitely but after
Super black holes bombard the Earth with powerful cosmic rays
The Earth is often under the attack of high-energy particles in cosmic rays, the culprit is the supermassive black hole in the center of the Milky Way.