Long dismissed as poor construction, ‘self-healing’ lime clasts have helped Ancient Roman structures persist for millennia.

Light-colored rocks scattered across Mars have become a quiet clue to a louder story about the planet’s past. NASA’s Perseverance rover keeps finding pale pebbles, cobbles and even small boulders ...

The stealthy startup plans to use a network of satellites to harvest sunlight and send it to Earth using infrared lasers.

Star clusters are of great importance in any galaxy: they are the birthplace of new stars, often containing massive stars of ...