Curiosity is the first step on every great space adventure.
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HOW BIG IS SPACE?
Space Travel Time
Imagine a signal travelling at the speed of light. How long would it take to reach another destination?
ONE-WAY LIGHT TRAVEL TIME12.5 minutes
Approx. 225,000,000 km at 299,792 km/s
Is that a spaceship travel estimate?
No. Real spacecraft travel much more slowly than light and take curved, mission-specific paths. Planetary distances change as planets move along their orbits, so the figures for Mars, Jupiter and Neptune are simplified representative distances, not live measurements.