Some thought the sky was falling.
Others thought it was a U-F-O.
But it was actually a bright meteor that streaked across the sky over Colorado and Utah early today, prompting a rash of calls to authorities and researchers.
No debris has been reported.
The meteor was spotted about 6:45 am, and was bright enough to be categorized as a fireball.
Denver Museum of Nature and Science meteor researcher Chris Peterson says the object came in from the east, crossed over the plains, and was seen to disappear over the mountains to the west.
Dispatchers in Utah County, south of Salt Lake City, also received reports of the object.
The North American Aerospace Defense Command says it was part of the Geminids meteor shower.