The first known interstellar asteroid may hold water from another star system in its interior, according to a study.
Discovered on 19 October, the object’s speed and trajectory strongly suggested it originated beyond our Solar System.
The body showed no signs of “outgassing” as it approached the Sun, strengthening the idea that it held little if any water-ice.
But the latest findings suggest water might be trapped under a thick, carbon-rich coating on its surface. Read more…