Word origin · etymology
Descriptive English compound.
Light-time is the time light needs to travel; correction names the adjustment for receiving a body's earlier light.
How we know · epistemology
Physical model
Finite light travel means an observed direction relates to an earlier emission event. The correction belongs to positional astronomy; it does not introduce an astrological delay in someone’s experience.
Connected concepts
Sources & provenance
Use the citations beside each section to distinguish a calculation convention, a historical teaching and an editorial example.