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The Milky Way is on a collision course

Our Milky Way galaxy is on a direct collision course with the Andromeda galaxy, rushing towards each other at 400,000 kilometres-an-hour.

Renowned astrophysicist Dr Lisa Harvey-Smith is on a national speaking tour explaining what happens when galaxies collide.

She tells Mark there is no need to panic because the collision won’t happen for another 3.8 billion years.

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