Did they already know this but just discovered it now or is this completely new to them?
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Wait... I don't understand the question.
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I hate when my questions don't make sense. Did they know that another solar system like ours existed but didn't see it until recently? Or is this a complete mystery that they discovered by chance?
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[quote]Did they know that another solar system like ours existed[/quote] ...I mean, we figured there was one similar in structure to ours out there somewhere (There was no reason for there [i]not[/i] to be one), but we'd never directly observed one before, no.