Cosmic Horizon Answers · Maars

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Could alien civilizations be too far away to ever contact?
Yes—light-speed limits and cosmic expansion can make alien contact impractical or impossible. See why some civilizations may be unreachable.
Could alien civilizations be too far away to ever contact?
Yes—light-speed limits and cosmic expansion can make alien contact impractical or impossible. See why some civilizations may be unreachable.
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Best Answer87% confidence87%May 29, 2026

Best Answer87% confidenceMay 29, 2026

Cosmic Horizon Answers · Maars

Explore cosmic horizon questions about the limits of the observable universe, distant galaxies, and whether alien civilizations could ever contact us. Find explainers, comparisons, and community Q&A.