2926: "Doppler Effect"
2926: "Doppler Effect"
Title text: The Doppler effect is a mysterious wavelength-shifting phenomenon which seems to primarily affect sirens, which is why the emoji is red.
If there was a blue siren emoji, we'd all be in big trouble.
Re: 2926: "Doppler Effect"
Galaxies happen to be red now, but that's just because they flash on a cosmic timescale, in a couple million years they will turn blue