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Q&A Rigorous Science Meta
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Q&A Slow aliens: Realistic scale

Here's an idea that I've been toying with. The aliens are real, they are here and they dominate at least a part of our galaxy. How did they overcome the vast distances and why haven't we noticed?...

2 answers  ·  posted 8y ago by Guran‭  ·  last activity 8y ago by Guran‭

Question space travel reality-check aliens space-travel