The first four humans to orbit over Earth's north and south poles have safely returned to Earth.

NASA photographer Josh Valcarcel captured Zena Cardman in a pose evocative of one of the first female astronaut's portraits.

But from 260 miles above in space, he saw no trace of humanity — just desolation: a seemingly endless view of pure white ice.

The commercial astronauts onboard SpaceX’s Fram2 mission are flying closer to Earth’s poles than anyone has before, offering ...