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主題: We often read of discovering exoplanets. another civilization 作者: peter 於 2022-08-28 19:02:19 We often read of discovering exoplanets. How far away from Earth would we be "discovered" by another civilization with our current detection technology
https://astronomy.com/magazine/ask-astro/2015/04/finding-earth?utm_source=asytwitter&utm_medium=social&utm_campaign=asytwitter |