A Cougar Helicopters aircraft was flying in Newfoundland & Labrador when crew experienced a 'bang and flash of light' ...

The lightning bolt heats up the air immediately surrounding the bolt so quickly that it also breaks the sound barrier ... and that’s why we hear a loud boom when something blows up.

The list of what didn't cause the sound include: It's not the first time a loud noise was heard by thousands while the source remained a mystery. A similar phenomenon called "brontides," known ...

When you are standing close to an alarm clock, it seems quite loud. Moving away from the clock, the alarm sounds quieter, so the distance from the source of a sound will affect how loud it seems.

A helicopter carrying offshore oil workers suffered a suspected lightning strike last week in ... of about 5000 feet when flight crew heard a loud bang, which was followed by a flash of light ...