Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could ...

Though it's a cold, dead planet, Mars still has its own natural beauty about it. This image shows us something we'll never ...

Early analysis of asteroid samples from NASA’s OSIRIS-REx mission show the residue of an icy brine, and a soup of amino acids.

Climate has changed when the planet received more or less sunlight due to subtle shifts in its orbit, as the atmosphere or surface changed, or when the Sun’s energy varied. But in the past century, ...