What is the extremely specific frequency, measured in MHz, where the 6EQUJ5 signal was detected?
Answer
1420.4556 MHz
The detected signal exhibited an extremely precise frequency of 1420.4556 MHz. This measurement is highly significant because it is only marginally offset from 1420.40575 MHz, which is the natural emission line frequency of atomic hydrogen. Hydrogen is the most abundant element in the universe, making its emission line a universal standard. Communicating near this frequency, often termed the "water hole," is theoretically ideal for interstellar communication, as any advanced civilization attempting a beacon would likely use such a universally recognized spectral line.
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