This week, dual escalations in Yemen and Ukraine raises sharp questions about America’s strategic priorities and its ability ...

Asteroid Donaldjohanson was the second destination on the NASA mission’s itinerary — and its size and shape were not what scientists expected.

A Nasa spacecraft has captured its first detailed images of an unexplored asteroid, revealing a bizarrely shaped 150-million-year-old space rock. The asteroid Donaldjohanson, located in the main ...

NASA's Lucy spacecraft has beamed back pictures from its latest asteroid flyby, revealing a long, lumpy, odd-shaped space ...