The five most popular CNN.com stories during the last 24 hours, according to Newspulse.
Mysterious fireball lights up sky: A flash of light, later explained to be part of a meteor shower, was spotted over Iowa and Wisconsin. (No audio)Â
Massive fireball reported in Midwestern sky: Authorities in several Midwestern states were flooded Wednesday night with reports of a gigantic fireball lighting up the sky, the National Weather Service said.
Alleged Tiger Woods mistress jailed: The cocktail waitress whose voicemail from Tiger Woods helped unravel the golfer's sex scandal last fall was arrested in West Hollywood, California, Wednesday night on several driving-related warrants.
Volcanic ash shuts air space in Europe: A cloud of ash from a volcano in Iceland swept toward mainland Europe on Thursday, forcing up to 6,000 flight cancellations across the continent, according to the intergovernmental body that manages European air travel.
Jobless claims in another surprise surge: The number of Americans filing for unemployment insurance for the first time jumped for the second week in a row, according to government data released Thursday.