In 2019, the Event Horizon Telescope gave us the first-ever image of a black hole's event horizon, revealing the area around the heart of M87. The event horizon is the closest we've seen to a black hole, but not the closest we can see. That would be the photon ring, where light itself is pulled into orbit around the black hole. To build an observatory that can see the photon ring, we'll have to extend the Event Horizon Telescope to space, creating an even larger virtual telescope that might incl...
In 2019, the Event Horizon Telescope gave us the first-ever image of a black hole's event horizon, revealing the area around the heart of M87. The event horizon is the closest we've seen to a black hole, but not the closest we can see. That would be the photon ring, where light itself is pulled into orbit around the black hole. To build an observatory that can see the photon ring, we'll have to extend the Event Horizon Telescope to space, creating an even larger virtual telescope that might incl...
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