An interstellar comet changed its chemistry after passing the Sun, revealing hidden layers and a surprising mix of carbon ...

: Some sci-fi aliens feel made up on the spot. Others seem so fully realized they could exist. This video explores the species with the deepest lore, logic, and worldbuilding in science fiction.

NASA's Curiosity rover uncovered critical new samples, including a series of compounds planetary scientists consider building ...

Kellin? There's no one here by that name.

On one stand columns and walls that, from a distance, could be Greek or Roman remains, but up close become recognizable as ...

Sure, numbers don't lie. But statisticians can present data in ways to fit chosen narratives.

A paper by Harvard social science researchers is claiming that aliens may already be living on earth. NBC News' Gadi Schwartz talks to Avi Loeb, Professor of Science ...