question archive In the 1998 movie Contact the first signal recognized from extraterrestrials was a rebroadcast from Vega of the televised 1936 Berlin Olympics
In the 1998 movie Contact the first signal recognized from extraterrestrials was a rebroadcast from Vega of the televised 1936 Berlin Olympics
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In the 1998 movie Contact the first signal recognized from extraterrestrials was a rebroadcast from Vega of the televised 1936 Berlin Olympics. Estimate the minimum size of the Vegan telescope required to process the signal. Vega is at a distance of 8.3 parsecs (2.6 × 1019 cm) from the sun. The broadcast had a frame rate of 25 Hz, the picture format was 169 ×169, and the signal was broadcast at a wavelength of 7.5 m. Assume that the signal was originally broadcast with a power of 15 kW. If at the time of transmission the sun and the Earth had their maximum possible separation when viewed by Vega could the Vegans, using this minimum-size telescope, determine that the source of the transmission was not the sun?
