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The supermassive black hole known as Sagittarius A * (or Sgr A *) has been watched by scientists for years. Although this cosmic giant is relatively quiet about a black hole, everything changed recently when it emitted an unprecedented amount of radiation.
A UCLA astronomer shared a 2.5-hour delay of images of a super-massive black Sgr A * hole with a record amount of glow around it. Researcher Tuan Do, whose team studies this giant at the center of our galaxy at the WM Keck Observatory in Hawaii, noticed that it became 75 times brighter this May.
Here is a time photo over 2.5 hours of May from [19459016г] @keckobservatory on the Sgr A * supermassive black hole. The black hole is always variable, but it was the brightest we've seen in infrared so far. It was probably even brighter before we started watching this night! pic.twitter.com/MwXioZ7twV
– Tuan Do (@quantumpenguin) August 11, 2019
His team published a book about their discovery in the Astrophysical Journal Letters. The article said that although the Milky Way's own black hole was observed in many infrared rays for 20 years, it reached much brighter flow levels in 2019 than ever before measurement.
What caused the unprecedented space show remains a mystery. As the astronomer pointed out, hot gas hits the black hole before it crosses the event horizon, which makes the space around it brighter because black holes do not emit light. He suggested that increased activity could be linked to changes in gas flow, but was struggling to determine why it would happen or how long it would last.
The researchers have suggested several hypotheses. Their paper suggests that the potential physical origin of the unprecedented brightness of Sgr A * may be due to changes in the accumulation flow after passing a star near it in 2018, or even a delayed reaction to the approach of a dusty object in 2014  Tuan Do reassures everyone on Twitter, saying "what happens to the black hole will not affect the Earth" as it is 26,000 light years or 260 quadrillion kilometers. He is also behind a huge amount of dust.
"Although it is very bright compared to historical data, it is not enough to influence us. Enjoy the fireworks and hopefully learn some cool black hole physics! , ”The astronomer tweeted.