Space/Science — HabitableZone

Space/Science » in reply to Is Sedna giving cues that our Sun is not alone?

Seems unlikely...

With the caveat that I am not knowledgable in this area, I suspect anything that emitted even a moderate infrared signal that close would have been spotted by now.

A black hole would be amazing, but one would think gravity lens effects from one that close would have stood out like a sore thumb on somebody's astronomical observations.

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