Astronomical Distance Calculator | Light-Speed Units

Astronomical Distance Calculator

Visualizing distances using light-speed-based units (c = 1)

Concept Explanation

This calculator demonstrates a unit system where the speed of light in vacuum (c) is defined as exactly 1 unit. In this system:

  • Distance = Light travel time × Speed of light
  • Since c = 1, distance numerically equals travel time
  • Example: 500 seconds of light travel = 500 units

This is analogous to light-year measurements, but with customizable units.

Interactive Calculator

0:00 8:20 20:00

Calculation Result

In a system where c = 1 unit:

Light travel time: 500 seconds (8:20)

Distance: 500 units

Distance = Speed of Light × Time = 1 × Time = Time

Astronomical Comparisons

The most distant object is the one with the longest light travel time.

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