An asteroid went undetected by telescopes before it hit our atmosphere earlier this month.
    
The giant space rock exploded over Indonesia in early October, leaving a trail of dust. It is being called one of the largest asteroid explosions ever observed.
    
The New Scientist reported the blast released as much energy as 50,000 tons of the chemical compound trinitrotoluene, or TNT.
    
That is about three times more powerful than the atomic bomb at Hiroshima, Japan in 1945. The infrasound waves, which are too low to be heard by the human ear, could be picked up on instruments halfway around the world.