In space, long-distance calls take a long time, and Harvard University astronomers claim that our messages to aliens could travel up to 3,000 years.
Photo: Shutterstock / Blue Planet Studio
Radio signals and all electromagnetic waves travel at the speed of light, but the unimaginable distances that separate Earth from potentially inhabited alien worlds make even the most optimistic enthusiasts suspect that aliens may be dead when they reach them. our messages.
Astronomers Abraham Leb and Amir Siraj addressed this issue and made calculations based on the Copernican principle, which states that the Earth “does not rest” in an isolated or special physical position in space and is not stationary.
In science, this means that humans should not be assumed to have a fundamentally privileged position in space, reports Klix.ba.
It is safe to assume that aliens would see our radio signals as technological markers and would actively listen to them.
The first radio transmission on Earth occurred in 1901, when the Italian invention Guglielmo Marconi made the first transatlantic transmission from Cornwall to England to St. Gifts to Newfoundland. Since then, humans have sent radio signals into space without thinking about the consequences.
This means that if there is a civilization 100 light-years from Earth with sensitive radio telescopes, there is a possibility that we have already heard and that we have already “started a conversation” with intelligent species whose response we are still waiting .
The aliens might decide to explore our planet in detail before sending a response.