A leading astrophysicist from Queen's University Belfast has warned that an asteroid strike is just a matter of time.
Professor Alan Fitzsimmons from the University's Astrophysics Research Centre has said it is a case of when an asteroid collision will happen, rather than if it will happen.
Joined by scientist Brian Cox and astronauts such as Apollo 9 astronaut Rusty Schweickart and astronaut Nicole Stott, Professor Fitzsimmons is highlighting the threat for Asteroid Day, a global event next
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