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Cosmic Discovery Hub

Light-Speed Journey

Travel times at light speed, a fraction of it, or Voyager 1's pace.

Distance: 4.0170e+13 km · At Light speed (c): 4.24597 years · Light itself takes: 4.24597 years

Classical travel-time estimate (distance ÷ speed). Near light speed, relativity changes experienced time — see the Time Dilation calculator. Distances to planets vary with orbital positions; averages are used and labelled as such.

Model assumptions

Distance ÷ speed (classical). Planetary distances are averages; positions vary daily.

Reference: NASA planetary data; Newtonian mechanics. This is an educational model, not an ephemeris.