How do Chinese astronauts survive reentry?

The spacecraft Shenzhou XII separated from the space station core module Tianhe at 8:56 am Thursday and will reach Earth on Friday. The three Chinese astronauts will take on the "trial by fire" of reentering the atmosphere after concluding a three-month voyage in space.

How will their spacecraft survive this perilous journey home against scorching heat, signal loss and blazing speeds? Watch our latest episode of Science Talk to find out.