Input (grade 4): As a basis for comparison, the Moon is about 1.4 light-seconds from Earth, the sun is approximately 8.5 light-minutes away, Pluto is about 5.5 light-hours, and the nearest star is 4.3 light-years away.
Output (grade 4): As a basis for comparison, the Moon is about 1.4 light seconds from Earth, the Sun is about 8.5 light minutes away, and Pluto is at an average distance of approximately 5.5 light hours.