If alien signals have already reached Earth, why haven't we seen them?

For decades, scientists have searched the skies for signs of extraterrestrial technology. A study from EPFL asks a sharp ...
Yahoo

Alien detection could be possible with their hidden nuclear fusion signs: Study

A new study published in the journal Astrophysical has outlined a novel method that could be used to detect advanced alien civilizations remotely. The premise is to look for signs of nuclear fusion on ...

Could alien signals have already reached Earth undetected?

Could alien signals have already reached Earth undetected? - If advanced alien civilisations exist and have contacted Earth, ...
Knowridge Science Report

If aliens already called, why didn’t we hear?

For more than 60 years, scientists have been scanning the skies for signs of intelligent life beyond Earth. Using powerful telescopes, they have searched for unusual radio signals, brief laser flashes ...
Yahoo

Scientists Revealed Their Official Playbook for Making Contact with Aliens

Technosignatures are theoretical signs of technologically advanced alien civilizations, but so far, none of those civilizations have phoned home. Researchers from the Search for ExtraTerrestrial ...
Mashable

If aliens harnessed solar power, could we detect them? NASA investigated.

"We propose it's a natural technological evolution that an advanced civilization could make," Ravi Kopparapu, a NASA planetary scientist who led the research published in the Astrophysical Journal, ...
The Daily Galaxy on MSN

Alien signals could have already reached us: Why haven’t we detected them?

For decades, scientists have been actively searching for signs of extraterrestrial life. Fromradio waves to laser flashes and ...