If life exists elsewhere, it might not be on worlds like Earth. Here are some of the more peculiar places scientists are ...

What would our atmosphere look like if there were no life on Earth?

Two major alien-life announcements in 2025 generated enormous excitement, but most astrobiologists remained unconvinced. Only 6.6% of surveyed experts thought possible biological molecules on K2-18b ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of a watery exoplanet with a red dwarf sun overhead. A new study suggests that the exoplanet GJ 3378b, which ...

This summer, exoplanet science—the study of planets orbiting stars beyond our sun—took a big step forward. Reports of helium gas escaping from the atmosphere of LHS 1140b propelled this exoplanet from ...

The Pentagon said that they have has not yet been able to find any evidence that extraterrestrials may be responsible for the hundreds of UFO incidents they are reviewing or that any alien beings may ...

On May 22, 2026, the Pentagon released a second batch of previously classified photos and videos showing what appear to be unexplained flying objects. These file dumps were the culmination of a ...