Article title: « Voie lactée : que se passe-t-il près de Sagittarius A? »
The article discusses recent observations of the supermassive black hole at the center of the Milky Way, known as Sagittarius A*. Using the Event Horizon Telescope (EHT), astronomers have been able to observe the black hole more clearly than ever before. The EHT has revealed that there is a ring of light and gas, called the « photon ring », orbiting around the black hole. This photon ring is created by the intense gravity of the black hole bending the light of the surrounding material. The observations also suggest that there is a jet of material being launched from the black hole, which could be caused by the interaction of the black hole with the superheated accretion disk of material surrounding it.
Answer:
Recent observations using the Event Horizon Telescope have revealed a ring of light and gas, called the « photon ring », orbiting around the supermassive black hole at the center of the Milky Way, Sagittarius A*. The observations also suggest that there is a jet of material being launched from the black hole.