Learn what planet rains molten iron and which planet has two moons like Tatooine in Star Wars.

All planets are made of gas, ice, rock and metal, and models of how planets form usually assume that these materials don't ...

Martian lake beds and deltas reveal the Red Planet’s watery past. But many puzzles remain, scientist Bruce Jakosky says.

New research led by a York University professor sheds light on the earliest days of Earth's formation and potentially calls ...

Elon Musk aims to colonize Mars despite challenges such as its extreme climate, thin atmosphere, and lack of liquid water.

Scientists are confident Mars was once abundant with water, as seen in massive flood-carved channels, ancient river valleys, ...

Life could have the time and energy to arise and prosper on Earth-like worlds in the rapidly shrinking "Goldilocks zones" ...

China’s Chang’e 6 mission uncovers evidence of a molten lunar magma ocean and a violent ancient impact.

Growing populations and rising demand from industry, data centers and farming have led to water stress across the globe. Even ...

"An epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners of the ...