When Might Advanced Extraterrestrials Engage With Earth? ShareDownloadFeedback 0 Recommend 0 recommendations Leave this field blank Have feedback about this infographic or portfolio? Let us know. What is the issue? (select at least one) Incorrect information Spelling or grammar issue Image does not load Download does not work Incorrect infographic assigned to this portfolio Duplicate infographic Poor image quality Text is difficult to read Accessibility problem Broken link or button General comments (optional) Submit Cancel More From This GroupSETI, METI
