Killers of the Cosmos

Earth is hit by 100 tons of rock from space every day; most burn up in the atmosphere but a single rock wiped out the dinosaurs.

When a massive star dies it can direct a blast of radiation that would obliterate life of earth.

More than 100 million pieces of small space debris are floating around the Earth.

A team of experts investigates extra-terrestrial beings and their threat to human life.

There are probably millions of black holes in the galaxy. Worse still, some are rogue, speeding through space with the potential to destroy Earth.

Experts discuss the many possible ways that could spark the beginning of the end for the universe, including when and why it would happen.