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First photo of the Sgr A* black hole at the center of our Milky Way

After the superb shot of the black hole located in the center of the Galaxy M87so this time it’s the turn of the monster in the heart of the Milky Way to reveal itself in a stunning image. This snapshot of Sgr A* (or Sagittarius A*) was taken by the scientific consortium Event Horizon Telescope (EHT) from observations and data dating from 2017. As a reminder, it is the same Consortium of scientists who had already made the snapshot of the black hole of the Galaxy M87.

Milky Way Black Hole

Sgr A*, or rather here the accretion disk (elements visible in orange) around the shadow of the black hole

Located 27,000 light years from Earth, Sgr A* is a supermassive black hole that ultimately looks a lot like the M87 black hole. This resemblance is good news for scientists, who thus have confirmation… that a black hole does look like this (two checks are better than one). Above all, this second exploit of the EHT would indeed confirm the predictions of general relativity. Even the irregularity of the accretion disk corresponds to Einstein’s theory, which postulates that in the near zone of a black hole, light no longer propagates in a straight line, which explains this accretion disk a little irregular. It is this same rule of light distortion near an ultra-massive object that produces the so-called “gravitational magnifying glass” effect.

The EHT scientists now hope to obtain an even sharper image of Sgr A*, and why not create an animation of the black hole from several “snapshots”.

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