Deuterium

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30th January

30th January

It's one part now! Best in persistent display.

persistent display light phot laser rainbow electronic

Comments

Deuterium 2nd February

It would be possible to make a comet that has an ion trail like that. You'd need to layer certain metals including, but not limited to, strontium, sodium, and barium. (Red, orange-yellow, and green, respectively)
Antek10 31st January

looks like an comet (: