A place or installation designed to study, exhibit, or demonstrate comets; an astronomical facility focused on comets.
Constructed from Latin 'cometa' (comet) plus '-arium' (place for), following the pattern of words like 'planetarium' and 'aquarium'. This is a modern formation for scientific purposes.
Just as a planetarium is where you see planets and an aquarium is where you see aquatic life, a cometarium would be the ultimate place to study these icy wanderers—though you'd more likely find comet exhibits inside a planetarium.
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