NASA is taking a crash course in defending Earth against a killer asteroid- literally.
We've seen how Hollywood does it, but it's now NASA's turn to test how to deflect an asteroid - for real - by slamming a spacecraft into it.
The DART mission probe was launched in November towards an asteroid called Didymos and its small moon, Dimorphos.
On Tuesday, at 12.14pm NZT, they will finally collide, 11-million kilometres away from Earth.
NASA's Co-Investigator on the Impact Working Group Team, Mallory DeCoster, spoke to Morning Report producer Samuel Wat.
