Voyager: 11 Billion Miles and Still Going

VoyagerVoyager 1 is exploring the edge of the solar system, 11 billion miles out, where the sun’s influence fades into interstellar space, with 35 year old technology.  As NASA says, “The sensitivity of our deep-space tracking antennas… is truly amazing. The antennas must capture Voyager information from a signal so weak that the power striking the antenna is only 10 exponent -16 watts (1 part in 10 quadrillion). A modern-day electronic digital watch operates at a power level 20 billion times greater than this feeble level.”

It hardly seems necessary to wait for quantum amplifiers to be perfected to probe far into space.voyager-interstellar

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