1. The elapsed time it takes for light (or radio signals) to travel between the Earth and a celestial object
   - one-way light time

Type of: elapsed time

Encyclopedia: OWLT

• unpack
• unpackaged
• unpaid
• unpaid worker
• unpainful
• unpaintable
• unpainted
• unpaired
• unpalatability
• unpalatable
• unpalatableness
• unpalatably
• unparallel
• unparalleled
• unpardonable
• unpardonably
• unparented
• unparliamentary
• unpartitioned
• unpassable
• unpasteurised
• unpasteurized
• unpatented
• unpatriotic
• unpatriotically