The image of a commuter clutching a mask to her badly burnt face during the London 7/7 bombings brings home the threat of terrorism in the UK.

A look at the Tiananmen Square image that shocked the world - Jeff Widener's photo of a man stood before a column of tanks in 1989.

Captured running from an attack in terror, the chilling image of 9-year-old Kim Phuc is thought to have helped end the Vietnam War.

Photographer Ron Edmonds made history when he captured the moment that John Hinckley Jr fired a gun at President Reagan as he waved at crowds.

A look at one of the most memorable images of the Iraq war - a photo taken by one of several soldiers who tortured Iraqi prisoners at Abu Ghraib.

Captured lying face down on a Turkish beach, the heart-wrenching image of two-year-old refugee Aylan Kurdi caused international outrage.

The focus falls on Ian Brady's 'trophy' shot of fellow murderer Myra Hindley, which captures her looking down on the grave of victim John Kilbride.

A look at the iconic photo of Charles and Diana's Royal Wedding balcony kiss. Some say their body language indicated the troubles that lay ahead.

Kurt Strumpf's photo of a terrorist at the 1972 Munich Olympic Games grew into a symbol of the 21-hour stand-off and its resulting bloodbath.

Fists clenched and walking hand-in-hand with Winnie, Greg English's image of Nelson Mandela leaving prison gave hope to millions across the world.

In 1980, photographers captured the SAS as they stormed through the Iranian Embassy in London in pursuit of the six gunmen who had taken it over.

With insight from British astronaut Tim Peake, this is a look at how one iconic image from the Apollo 11 mission changed the way we see our planet.