This is a 3D raytracing simulation of a non rotational Black Hole.
Click & drag the mouse to change orbit orientation.
Click & drag the mouse while pressing Space bar to change viewport angles.
Hold Arrow UP to get closer to the Black Hole.
Hold Arrow DOWN to get further away to the Black Hole.
If you get too close rotate the viewport angle to see around you.
Press O to start Auto Orbit.
Press B to change the Background Image.
Press S to the sound On/Off.