This is the first photo of our galaxy's black hole

This is the first photo of our galaxy's black hole


12 May 2022

For many decades, researchers have been telling us that there is a huge black hole at the center of our Milky Way galaxy, and now we can see it thanks to the coordinated actions of the Event Horizon Telescope (EHT), comprised of the largest space telescopes on Earth.

Three years after the first black hole photo was published, EHT returns with the first shot of Sagittarius A *, our "black hole" 26,000 light-years from Earth, 4 million times larger than that of the Sun, while its gravitational field is so strong that it forces more than 200 billion stars to move around it.

Obviously what we see is not the black hole, but the radiation emitted by the gas and dust particles that surround it. This radiation is extremely weak, so space telescopes need to work together to absorb it and then analyze and combine this information.

The whole project cost over $ 60 million and it was better to transfer the data by air from one telescope to another, rather than attempting to send it over the Internet.

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