> which NASA now hopes can be outfitted to look up instead of down

Ah! Long ago I had a (then) gf who was a Gamma ray astronomer. For part of her PhD she worked at Livermore labs. I couldn't have lunch with her because the section she worked was classified.

I asked her about it and she said that she did astronomy, and there were a lot of amazing gamma ray physicists there, but they were worried that anybody who could build or operate such a telescope could probably turn it to point down, which they very much did not want.

I still wonder if she was pulling my leg.