The question of whether we are alone in the universe has plagued humanity since the dawn of time. It’s answer, one way or the other, could fundamentally alter our understanding of life, evolution, ...

The Great Filter theory suggests that advanced civilizations may never survive long enough to spread through the stars, ...

Long before scientists discovered that other stars in the universe host their own planetary systems, humanity had contemplated the existence of life beyond Earth. As our technology matured and we ...

Global temperature increases over the past thirty years, visualized. Credit: NOAA/NCEI Earth's average global temperatures have been steadily increasing since the Industrial Revolution. According to ...

The quest to find extraterrestrial life is an unending pursuit of science, and one aspect of this search revolves around technosignatures. Detectable from as far as 40 light-years away, Earth’s ...

The contradiction between the high possibility of intelligent life other than humans existing in the universe, and the fact that no extraterrestrials or extraterrestrial civilizations have come into ...

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 ...

If life is common in our Universe, and we have every reason to suspect it is, why do we not see evidence of it everywhere? This is the essence of the Fermi Paradox, a question that has plagued ...

The question, ``Considering the size of the universe, there should be extraterrestrial civilizations, but for some reason no evidence of contact has been found,'' is called `` Fermi's paradox,'' after ...

The Harvard physicist who claimed the first interstellar visitor in 2017 was an alien craft, although the object has been determined to be a rock, says Earth needs to form treaties with ...