An interactive visualization of how long it takes light to travel from Earth to solar system objects — in real time, or accelerated up to 100×.
Select a destination — Moon, Mars, Neptune, or any other solar system object — then launch the light beam and watch it travel across the screen. The footer shows the exact travel time, distance, and current simulation speed.
- 1× — real speed of light (300 000 km/s)
- 10× — 10 times faster than light
- 100× — 100 times faster than light
| Destination | Distance | Light travel time |
|---|---|---|
| Moon | 384 400 km | ~1.28 sec |
| Venus | 41 400 000 km | ~2.3 min |
| Mars | 78 340 000 km | ~4.4 min |
| Jupiter | 628 730 000 km | ~34.9 min |
| Saturn | 1 275 000 000 km | ~70.8 min |
| Uranus | 2 723 950 000 km | ~151.3 min |
| Neptune | 4 351 400 000 km | ~241.7 min |
| Pluto | 4 280 000 000 km | ~237.8 min |