Nina’s little universeA BIG BOOK OF LITTLE WONDERS
Pick a little adventurePlay at your own pace
ONE LAP MAKES ONE YEAR
Ready, set… orbit!
Start the clock. Can Mercury finish a year before Earth?
0.0 Earth years
MercuryA year takes 88 Earth days
VenusA year takes 225 Earth days
EarthA year takes 1 Earth years
MarsA year takes 1.9 Earth years
JupiterA year takes 11.9 Earth years
SaturnA year takes 29.4 Earth years
UranusA year takes 84.0 Earth years
NeptuneA year takes 164.8 Earth yearsA planet’s year is one trip around the Sun. Faraway planets take longer to finish that trip.
Year lengths keep their real proportions. Planet sizes, circular paths, spacing, and starting positions are illustrative. Use the slider or +1 Earth year to explore without animation.
Explore the science with NASA ↗