Lunar night puts Japan's lander back to sleep

After a brief awakening, Japan's moon lander is out of action again but will resume its mission if it survives the two-week lunar night, the space agency said Thursday.

NASA journeys to the metal-rich asteroid Psyche

It's a world like no other: a metal-rich asteroid that could be the remnants of a small planet, or perhaps an entirely new type of celestial body unknown to science.

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