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tingtong500 t1_jdl6fna wrote

He’s going on about the twin earth theory where there’s a second earth on the exact opposite side of the sun in lockstep with our earth so in theory we would never know what’s there unless we just leave a satellite hanging around somewhere that isn’t in a orbit around earth like mars or something

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PoppersOfCorn t1_jdl6ui8 wrote

I understand that now, but we wouldn't need a satellite(even if we have many now). We'd know by the way other objects/planets interact with it

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