Solar Explorer
The speeds are real: see how the inner planets race while Neptune barely moves. The sizes and distances are squished to fit. Check How far? for the real distances.
Where do you want to go?
Tap a planet on the map or pick one here. Every place has facts to uncover, math to try and a quiz that wins you a passport stamp.
Remember the order
My Very Excellent Mother Just Served Us Noodles
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. Can you make up your own silly sentence?
Ready to fly there? Play Planet Hopper →
Side by side
vs
The circles are drawn to the same scale, so you see their true sizes compared to each other.
Real distances
Race a beam of sunlight
Light is the fastest thing there is: 300,000 km every second. Press the button and watch sunlight travel out to the planets. Scroll sideways to explore the whole trip.
Light travel time 0 min
On this map, 1 cm of screen is about 25 million km.
1 second here = 5 minutes of real light travel.
The planets are drawn much bigger than they really are. At this scale even the Sun would be a tiny dot!
Space passport
Your rank
Space Cadet
0 / 11 stamps