The ROLSES instrument on its way to the Moon captured Earth's radio waves, resembling a 1990s Carl Sagan experiment, offering a detailed electronic fingerprint of civilization's radio broadcasts leaking into space for potential alien observers.
University of Colorado physicist Jack Burns aims to compare Earth's radio fingerprint to observations from a future Moon telescope on the far side, seeking insights into other worlds' radio data and potential alien communication signals.
A 1993 Carl Sagan experiment on Earth's radio waves using the Galileo spacecraft highlighted the uniqueness of narrow-band, pulsed, amplitude-modulated transmissions that could be linked to intelligent beings, as per Sagan's observations in Nature journal.
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