How can you take photos without light?
Few chuckles from the audience
Well, radio is also light. The radio waves are as light as the eye(light?) that enters into the detectors that we have here (points at eyes). They're called eyes. We use the light the waves that come from the remote black hole region in such a, a quite tricky way because the same light that arrives to earth is that same wave that comes to all the different telescopes, and we trap these front of light in our computers. We can then reproduce and play back data but this is also the radio light which is also the same light that comes into the mobile phones and that we are working on in the electromagnetic spectrum.
Another stepped in to help:
What we see, what we see in the image is actually light that is produced by plasma around the black hole it's true that we cannot see it because it's black so we cannot see it but we, we see it's shadow that is being cast on this glowing plasma. So we are actually taking a picture of light. (shrugs)
So which one is it? Did you convert radio waves into the visible light spectrum or did you actually take a picture of light waves?
I mean how is that an acceptable answer from an academic. At least say you assigned colors to the radio waves based on the wavelength of the radio waves received and then created a composite image based on our interpretations of that data. Let's not pretend it's anywhere in the visible light spectrum because by their own definitions it's invisible. But I'm not even sure what their answer is at this point.
The next guy went on to talk about how they "think" black holes are engulfed in an optically thin fog of radio emitting material. So the fact that we see nothing in the middle is quite significant.
I feel like we're playing a stupid game with stupid prizes at this point.