)
What is NASA's Dart mission? The world's first planetary defence system
NASA says it's all set to test its Double Asteroid Redirection Test (DART), a mission to demonstrate the world's first planetary defence system, designed to deflect an asteroid from a potential doomsday collision with Earth.
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)