When was dark matter actually discovered for the very first time

When was dark matter discovered for the very first time?
PepePina
Asked Jan 24, 2010
Well it hasn't been discovered really, it's purely theoretical, it's more of a concept really. The theory itself states it as a force, not matter, rather, a lack of matter really. It was first claimed by Fritz Zwicky in 1934.
Oni_Kami
Answered Jan 24, 2010

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