Nature Astronomy, Published online: 28 December 2023; doi:10.1038/s41550-023-02134-2

If advanced technological extraterrestrial lifeforms are out there, where are they? Thus goes the Fermi paradox. This Perspective reviews various solutions and proposes that they are either not there or are deliberately hiding from us.

—————
Free Secure Email – Transcom Sigma
Transcom Hosting
Transcom Premium Domains