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The galaxy looked empty - then the aliens may have moved into black holes

This video explores obscure answers to the Fermi Paradox, asking why the universe seems silent if alien civilizations should ...
USA Today

SETI thinks it could have missed calls from aliens. Here's why

Solar winds and coronal mass ejections may scatter narrow signals, making them harder for Earth-based telescopes to detect. The SETI Institute uses radio telescopes to search for signs of intelligent ...