A chance encounter with another asteroid could steer Apophis destructively close to Earth during a future passage.

New research suggests that small asteroid collisions could potentially alter Apophis’s trajectory, raising concerns about future risks.

Astronomer Paul Wiegert had found a scenario in which Apophis could be sent careening into Earth in 2029. But we’d have to be extremely unlucky.

In a bit of ominous news befitting a Friday the 13th: It turns out that the asteroid Apophis could have a very small chance of colliding into Earth in five years, when it is expected to make a ...