For over a century, humans have utilized radio waves for Earth-bound communication.
These waves also permeate into space, with our distant probes like Voyager dispatching stronger signals.
Researchers have recently traced these signals to distant spacecraft and determined which celestial bodies could intercept them.
They’ve compiled a list of stars likely to encounter Earth’s signals in the next 100 years, suggesting that, if existent, alien civilizations could reply as soon as 2029.
This concept, popularized by Carl Sagan in “Contact,” was used in their study.
However, such extraterrestrial studies should be considered cautiously.
The Deep Space Network (DSN) signals continue past their target spacecraft into interstellar space, eventually reaching other stars.
Based on light-year calculations, the researchers estimated the time for these signals to reach nearby stars and receive potential alien responses.
One significant finding was a signal reaching a white dwarf 27 light-years away in 2002, with a potential return message arriving no earlier than 2029.

Subscribe to Science Time: https://www.youtube.com/sciencetime24

#science #shorts #space