Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

Planet K2-18b, an apparent water world 124 light years away, has been seen as a promising location in the search for aliens, ...

Now that debates have cooled down on the series, it's time to dive back into the impressive experience.

If you've been following exoplanet research over the last couple of years, you've definitely heard of K2-18b. Located 124 ...

In last week’s The Universe column, I fielded a reader’s question about galaxy collisions in an expanding universe. The answer deals with vast distances, inscrutable forces and the ultimate fate of ...

Are we alone in the Universe? With more than 100 billion galaxies in the observable Universe and at least 500 billion planets in the Milky Way alone, don't you think we should have found something by ...

We may not have found any definitive proof of extraterrestrial life just yet, despite plenty of hope among scientists. But if we were to ever come to an answer in the form of alien biology or ...

For nearly five decades, Steven Spielberg has helped define what alien stories mean to movie audiences. Sometimes they arrive as cosmic miracles. Sometimes as existential threats. Sometimes as ...

A New England artist makes music from the imperceptible noises of nature—using tools that usually detect hidden nuclear ...

Scientists demonstrated that an Earthly extremophile might withstand being ejected from the Red Planet on debris spewed into ...

Hardy bacteria in a lab survived pressures comparable to an asteroid strike on the red planet, suggesting a hypothetical scenario in which our planet was seeded with life.

Add Yahoo as a preferred source to see more of our stories on Google. Abiogenesis—the emergence of life from nonliving organics—is the leading theory regarding how life spawned on Earth, but it is ...