NASA and the Mercury Seven embarked on a journey into the unknown. Its rocket technology was unproven and the risks were enormous. No one knew what the outcome would be or if the rigorous training hours would prepare the astronauts for travelling in excess of 17,000 miles per hour on a converted intercontinental ballistic missile. Packed with incredible footage of the mission this programme transports you back to that historic period and invites you to experience the highs and lows alongside the astronauts that were the undisputed heroes of their day.