Psyche, spanning 173 miles (280 km) at its widest, stands out in the asteroid belt. Long thought to be the exposed metallic ...

Earth is surrounded by an invisible force field — a vast magnetic shield generated by molten metal churning deep inside the planet. This magnetic field protects us from harmful solar winds and cosmic ...

An astrophysicist who spent time doing research at the South Pole gets to the bottom of how things feel at the ends of the Earth.

Paradise found, the cradle of the human race at the North Pole : a study of the primitive world by Warren, William Fairfield, 1833-1929 Publication date 1885 Topics Cosmology, Eden Publisher Boston : ...