Answers to Science Questions

Space is full of stars giving off huge amount of energy. So, why is it so chilly?

We think we know what we sound like but when we hear our voices back it's always a surprise, why is this?

Unless you are an identical twin it's unlikely you've found anyone else who looks just like you. But, why do...

We've all had days when we're tired and wish we didn't have dark circles under our eyes. But why do we...

What causes sleepwalking and is there anything that can be done to prevent this strange nocturnal behaviour?