The elapsed time it takes for light (or radio signals) to travel between the Earth and a celestial object
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                                                Noun
 the elapsed time it takes for light (or radio signals) to travel between the Earth and a celestial object
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                        Usage Examples
                            Misspelled Form
                    OWLT, OWLT, WLT, OWLT, OWLT, OLT, OWLT, OWLT, OWT, OWLT, OWLT, OWL, OWLT.