Does science have all the answers? This film examines some of the biggest riddles facing scientists today.

How did a mysterious dagger made from space iron come to lie at the side of the boy king? Could Tutankhamun's dagger be made from a meteorite? If so, where was the meteorite found, and could this incredible event even be responsible for kick-starting the iron age?

Methuselah is one of the most mysterious stars ever discovered – when it was first detected scientists thought it was 2 billion years older than the universe. But how can this be? This film gets up close and personal with the key players trying to answer one of the biggest mysteries in science – just how old is the universe?

The Sun's upper atmosphere is hotter than its surface. Why? This film meets scientists conducting missions that may finally reveal how the Sun can seemingly break the rules of physics and, whether answering this question will help scientists predict when the next potentially devastating solar storm may strike.

We know what the moon looks like. But there's another side, hidden from view. And it's surprisingly different – mountainous, deeply cratered, with a thicker crust. Why is the moon's far side totally different from the side we can see? This film unravels the theories that could explain why.