Mars science discoveries can be so superficial — the search for water caches, terrestrial sampling, and other technical marvels tend to take place on the surface of the Red Planet (or a little above ...

CAPE CANAVERAL, Fla. (AP) — NASA’s Psyche spacecraft rocketed away Friday on a six-year journey to a rare metal-covered asteroid. Most asteroids tend to be rocky or icy, and this is the first ...

Earth’s core isn’t just a boring, featureless ball of metal, it turns out. A recent study used seismic waves from earthquakes to make a 3D model of the center of our planet, and the researchers ...

Scientists have long thought Earth's inner core is like a huge solid metal ball. But an experiment revealed it may be a lot softer — more like butter, a lead scientist said. It could help explain why ...

CAPE CANAVERAL, Fla. (AP) — Scientists revealed Wednesday that Mars’ innermost core appears to be a solid hunk of metal just like Earth’s. The Chinese-led research team based their findings on seismic ...

Researchers have discovered a new, innermost layer nestled inside our planet’s inner core, a 400-miles solid metallic ball that responds to the reverberating shockwaves of earthquakes in an unexpected ...

Mars has a heavy heart after all. The Red Planet has a dense core of liquid iron surrounded by a relatively thin layer of molten rock, researchers report. The finding resolves a recent conundrum that ...