1.round-trip light time - the elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting pointRTLTelapsed time - the time that elapses while some event is occurring
round-trip light time
noun
Synonyms for round-trip light time
noun the elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point