Astronomy Louisiana loud boom: Earsplitting boom shakes the ground. Sonic UFO, meteorite? by Alien UFO Sightings October 17, 2014 by Alien UFO Sightings October 17, 2014 A loud boom that rattled both the ground and residents of Louisiana and shook the earth around 4:30 p.m. Monday – thought by some to be a sonic UFO, others to be meteorite slamming into… Like this:Like Loading...