Yes, it's true. The 360° panorama lens is half a sphere coated in reflective material suspended above the camera.
Well,
in this case, half a sphere coated in reflective material with a hole
at the top, suspended above the camera with a mirror on top of it. But
it makes pictures like this (mounted on the plane):
Now it needs some processing before it's something you can look at
without getting a headache. So after relearning some of high school's
math (if you ever wondered why do you need to know something in
Cartesian and Polar coordinate systems, this is why) this is the result:
Hm, needs some more work.