NASA spacecraft avoids collision with Mars' moon Phobos
NASA's Mars-orbiting spacecraft performed an unscheduled manoeuvre to avoid a future collision with Mars' moon Phobos. A rocket boost was used to shift the spacecraft's orbit as it was projected to cross within 7 seconds of the moon in a week. Given Phobos' size, the two bodies had a high probability of colliding if no action were taken, scientists said.