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xkcd #2886: Fast Radio Bursts
(imgs.xkcd.com)
Alt text:
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.
Microwaves travel through space at the speed of light because they are photons