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xkcd #2886: Fast Radio Bursts
(imgs.xkcd.com)
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Dr. Petroff has also shown that the Higgs boson signal was actually sparks from someone microwaving grapes, the EHT black hole photo was a frozen bagel someone left in too long, and the LIGO detection was just someone slamming the microwave door too hard.
I'm fairly sure microwaves float in space. I don't think there are completely different laws of physics, just for microwaves. A microwave in a bistro however...
Microwaves travel through space at the speed of light because they are photons
Bistromath was such a beautifully strange concept for a ship. I freaking love SEP fields the most from that book.
The combination of the infinite improbability drive leaking, and the SEP (somebody else's problem) field is amazing. It provides an in-universe explanation for the various weird and unlikely things that happen.