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Near-earth asteroid tracking

program run by NASA and the Jet Propulsion Laboratory to discover near-Earth objects

Pronunciation
/ˈnɪr - ərθ ˈæstəˌrɔɪd ˈtrækɪŋ/
/nɪə - əːθ ˈastərɔɪd ˈtrakɪŋ/