A Russian scientist has claimed that an alien spaceship sacrificed itself to prevent a gigantic meteor from destroying earth a century ago.

According to The Sun, Dr Yuri Labvin, head of the Tunguska Spatial Phenomenon Foundation, has found quartz slabs with strange markings that he thinks were part of a UFO control panel.

He made the discovery near the site of the so-called "Tunguska event" - a massive and so-far unexplained explosion that devastated more than 100 square miles of Siberian forest in June 1908.