51�Թ�

They look like an ordinary pair of glasses – but these are tech-packed specs.

Measure each contender or confirm its specs with the manufacturer, suggests Davis.

He shows us the small cylinder where the specs of dust can be heated to 1400 Celsius.

Actually it’s perfectly normal in a busy life to lose your specs or wonder what you went looking for in the cupboard.

But the behemoth rocket already has some impressive specs, and dwarfs all of its predecessors.