Many other planets throughout the universe probably hosted intelligent life long before Earth did, a new study suggests. The probability of a civilization developing on a potentially habitable alien ...

Researchers are considering the fact that there might be already the presence of very developed aliens civilizations which are out of reach of the humans. This theory is based on an assumption. The ...

Advanced alien civilizations may communicate via a series of flashing lights, similar to how fireflies do, a new paper hints. This would potentially make extraterrestrials much harder to spot if we ...

Recent research suggests that galaxies with high radio emissions—known as “radio-bright” galaxies—could be home to alien civilizations. This idea, explored in Brian C. Lacki’s study Artificial ...

After searching 100,000 galaxies for signs of highly advanced extraterrestrial life, a team of scientists using observations from NASA's WISE orbiting observatory has found no evidence of advanced ...