Solar prominences, huge arcs of plasma hovering above the Sun, are getting fresh attention from scientists studying space ...

Discoveries of molecules in space that suggest extraterrestrial life are exciting, but they need to be taken with a grain of ...

Scientists have seemingly settled long-standing arguments about whether the components of Earth originated from the inner or ...

For observers on Earth, the sun appears as a bright, familiar disk—but what we see is only half the story. Like the moon, one ...

The comet that rambled past us from another star last year likely originated in a cold, isolated corner of the galaxy that had yet to gel into its own solar system, astronomers reported Thursday.

16. Despite Mercury's extreme temperatures (like, up to 800 degrees Fahrenheit), it's believed to have ice at its north and ...