I feel a whole lot better about dark matter than I do about dark energy.
And while dark matter is a pretty vague concept, at least the name suggest that it's more of a question than an answer. A reasonable shorthand for "we don't know what's there but as far as we can tell there must be something." I think if it had a fancy latin or greek name or an acronym, I'd feel more that it was a deceptive answer. If someone called it "Umbratonium," it would sound a whole lot more like someone was hiding their ignorance.
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And while dark matter is a pretty vague concept, at least the name suggest that it's more of a question than an answer. A reasonable shorthand for "we don't know what's there but as far as we can tell there must be something." I think if it had a fancy latin or greek name or an acronym, I'd feel more that it was a deceptive answer. If someone called it "Umbratonium," it would sound a whole lot more like someone was hiding their ignorance.