Could this save the world from a future planet-killing asteroid?
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Nasa’s Dart spacecraft has crashed into the asteroid Dimorphos 6.8m miles from Earth in the space agency’s first “planetary defense test”.

Dart (Double Asteroid Redirection Test) collided head-on with an asteroid the size of a football stadium on Monday in an unprecedented full-scale test of Nasa’s capacity to defend Earth from a doomsday scenario.

The test was humanity’s first attempt at moving another celestial body, to see if a large asteroid hurtling towards Earth could be diverted.

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