The first picture of a black hole will probably be unveiled next week

(NBC News) They captured our imagination for decades, but we had never photographed a black hole before – until now.

Next Wednesday, at several press briefings around the world, scientists will unveil the first ever photo of a black hole in humanity, the European Space Agency said in a statement. More precisely, the photo will be of "Sagittarius A", the supermassive black hole located in the center of our galaxy of the Milky Way.

But are not black holes, well, black, and therefore invisible, so that our telescopes can not "see" them? Yes, the image we are likely to see will be that of "the horizon of events", the edge of the black hole where light can not escape.