Discover how scientists have used iron isotopes to determine the likely origin of the Mars-sized planet named Theia.

Learn more about volcanic activity on Mars and how it may have once provided vital elements to the atmosphere.

Which planet is the furthest from the sun? Some may think it’s Pluto, but it’s actually Neptune. Learn more about this ice giant and how it can help us understand more about planets in our Solar ...

Will the pole shift actually happen? Discover more about Earth’s magnetic poles and how they’ve shifted in the past.

Learn how several working groups with their own carving techniques built the iconic moai of Easter Island.

Is a sun a star or a planet? While science now agrees the sun is a star, new telescopes may soon challenge how we define solar objects.

Learn more about loggerhead turtles’ ability to feel the magnetic field throughout their migrations — an ability that they’ve ...

Learn about the recent eruption of Hayli Gubbi, a volcano in Ethiopia that was previously dormant for nearly 12,000 years.

Deep within Earth’s mantle, scientists have uncovered surprising evidence that traces of the planet’s early form,proto-Earth, ...

Little is known about the long-destroyed moon-forming planet, Theia. But it may have been born in the inner solar system—just like Earth—a new study suggests ...

Learn what caused a major population crash in the Maya civilization, driving several cities to fall into ruin.

Learn how dolphins have fun by blowing bubble rings underwater, using clever tricks to play games.