It's impossible to directly see a black hole itself, because they don't emit any light. Instead, we can only observe the effects of their intense gravity on the surrounding environment.

Here's what we can see based on observations and simulations:

* Accretion Disk: Gas and dust drawn into the black hole form a swirling disk around it. This disk heats up due to friction, emitting intense light and radiation across the electromagnetic spectrum.

* Jet: Some black holes emit powerful jets of particles that travel at near-light speeds. These jets are often observed as bright, narrow beams of light.

* Gravitational lensing: The immense gravity of a black hole bends light around it, causing a distortion of background objects. This can create multiple images of distant galaxies or stars.

* Event Horizon: The boundary around a black hole beyond which nothing, not even light, can escape. This is the point of no return and cannot be directly observed.

In summary:

A black hole itself is invisible, but we can observe its influence through:

* Bright, swirling accretion disks

* Powerful jets of particles

* Distortions of light due to gravitational lensing

While we can't directly "see" a black hole, the data we collect provides compelling evidence for their existence and allows us to study their properties.