WPTV | Asteroid anxiety: In a worst-case scenario, Asteroid 2011 AG5 will hit Earth ... WPTV In a worst-case scenario, Asteroid 2011 AG5 will hit Earth sometime in year 2040. Approximately 460 feet in size, the asteroid was discovered in 2011 by Mount Lemmon Survey astronomers in Tucson, Ariz. and is considered "high risk," according to ... |
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