Prophecy At 1420 MHz
Running time	5:04
Appears on	Inferno
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Comments

• 1420 MHz (21 cm) is the hydrogen line — the emission frequency of neutral atomic hydrogen, and the frequency most SETI searches have listened on for extraterrestrial signals since the 1960s. It is sometimes called the waterhole frequency.
• Pairing 'prophecy' with the hydrogen line echoes a long SETI-era trope: an alien transmission as revelation. Thematically sits alongside "Hydrogen Helium Lithium Leviathan" on the same album.