https://russian.lifeboat.com/blog/2019/03/a-seti-search-of-earths-co-orbitals Safeguarding Humanity Sun, 24 Mar 2019 11:41:07 +0000 hourly 1 https://wordpress.org/?v=5.7.2 https://russian.lifeboat.com/blog/2019/03/a-seti-search-of-earths-co-orbitals#comment-359201 Sun, 24 Mar 2019 11:41:07 +0000 https://lifeboat.com/blog/2019/03/a-seti-search-of-earths-co-orbitals#comment-359201 Reminds me of Duncan Lunan’s speculations about long-delay echoes detected about a century ago as being such a probe.

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