A loud explosion rattled windows and even knocked one eyewitness off her feet as a bright light streaked through the California sky Sunday morning. Experts say it is likely a meteor entered the Earth's atmosphere, though others are still uncertain as to what, exactly, caused the blast.
Authorities say the meteor was a "fireball," a particular type of meteor that is often visible to people on the ground but rarely explodes or makes a noise. For that to have happened, the fireball must have stayed intact well beyond the point where most break apart.
© C Harris Lynn, 2012