Earth's deep space transmissions (IMAGE)
Caption
In a new study, researchers from Penn State and NASA’s Jet Propulsion Laboratory analyzed human deep space communications and found that human transmissions are frequently directed toward our own spacecrafts near Mars (lower left), the Sun, and other planets. Because planets like Mars do not block the entire signal, an extraterrestrial intelligence positioned along the path of interplanetary communications—when the planets align form their perspective—could potentially detect the spillover. This suggests that humans should look to planetary alignments outside of the solar system when searching for signatures of extraterrestrial communications.
Credit
Zayna Sheikh
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License
CC BY-SA