Monday, 20 May 2019

Remarkable image of black hole released

The image reveals the black hole at the center of Messier 87, a massive galaxy in the nearby Virgo galaxy cluster. This black hole resides about 54 million light-years from Earth

An international scientific team on Wednesday announced a milestone in astrophysics – the first-ever photo of a black hole – using a global network of telescopes to gain insight into celestial objects with gravitational fields so strong no matter or light can escape.

The research was conducted by the Event Horizon Telescope (EHT) project, an international collaboration begun in 2012 to try to directly observe the immediate environment of a black hole using a global network of Earth-based telescopes. The announcement was made in simultaneous news conferences in Washington, Brussels, Santiago, Shanghai, Taipei and Tokyo.

The image reveals the black hole at the center of Messier 87, a massive galaxy in the nearby Virgo galaxy cluster. This black hole resides about 54 million light-years from Earth.

Black holes, phenomenally dense celestial entities, are extraordinarily difficult to observe despite their great mass. A black hole’s event horizon is the point of no return beyond which anything – stars, planets, gas, dust and all forms of electromagnetic radiation – gets swallowed into oblivion.

“This is a huge day in astrophysics,” said U.S. National Science Foundation Director France Córdova. “We’re seeing the unseeable.”

The fact that black holes do not allow light to escape makes viewing them difficult. The scientists look for a ring of light – disrupted matter and radiation circling at tremendous speed at the edge of the event horizon – around a region of darkness representing the actual black hole. This is known as the black hole’s shadow or silhouette.

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