With days left on Baba Vanga’s 2025 alien prediction, scientists explain what first contact would look like

With the countdown to Baba Vanga’s 2025 alien prediction, astronomer David Kipping proposes a controversial theory about the ...
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Is the first alien signal a civilization’s last message?

The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, yet a growing group of researchers warns that such a moment might arrive not ...