Description

 really sorry about episode 2 if any 1 has it pls upload it as mine didnt have sound really sorry 2 the people who downloaded it. i have checked this one and it has sound 


Next, Richard looks at the history embedded in the Keck Observatory. How could a sand-blaster, a Cold War spy gadget and the invention of refrigerators have led to the creation of this super telescope? And using just a satellite dish and some foil is it possible to set fire to a boat? Richard experiments.