As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

New images of the planet Mercury taken by a robotic spacecraft have just been released — and they show the scorched world in fascinating up-close detail. SEE ALSO: Is Mercury in retrograde?

Experts warn that "something" in the core of the Earth is causing the magnetic pole to shift. North Pole is shifting toward Siberia and raising concern ...

Researchers from Curtin University have uncovered the world’s oldest known meteorite impact crater in Western Australia, ...

The north pole of Mars is slowly sinking under the weight of an ice cap that only formed within the past few million years. And, in the process, it's telling us something about what the planet's ...

DALLAS — Get ready, North Texas! This evening, Feb. 28, a celestial event that showcases the big names in our galaxy: Our planets. A seven-planet parade will be visible from the big North Texas ...