Near-Earth asteroid Bennu has a slim chance of colliding with Earth in 2182. If it does, the impact could trigger a global winter that affects our planet for years.
Asteroid samples fetched by NASA hold not only the pristine building blocks for life but also the salty remains of an ancient water world, scientists reported Wednesday.
Odds are a funny thing. 1-in-100, for example, sounds like a long shot—until you find out it’s the chance that an asteroid will impact Earth. In a surprising—but not definitive—turn of ...