We will use your email address only for sending you newsletters. Please see our Privacy Notice for details of your data protection rights.

Sign up fornow and never miss the top Royal stories again.

The incredible footage was shot by pilot Lou Boyer from the cockpit of a passing Boeing 747 over eastern Russia.

Video showed the Boeing 787 Dreamliner cruising along through the air, completely enveloped by a thick white cloud that left a billowing trail in its wake.

Called a contrail, the cloud is a rare phenomenon formed by water vapour when it condenses and freezes around aerosols (small particles) from the plane’s exhaust.

But the impressive video has sparked immediate conspiracy theories, with some sceptics suggesting the contrail is in fact a ‘chemtrail’.