Which planet has the longest orbital period?
Understand the Problem
The question is asking which planet in the solar system takes the longest time to complete one orbit around the Sun. This involves understanding the distance each planet is from the Sun and their respective orbital mechanics.
Answer
Neptune
The final answer is Neptune, with an orbital period of about 164.8 Earth years.
Answer for screen readers
The final answer is Neptune, with an orbital period of about 164.8 Earth years.
More Information
Neptune's lengthy orbital period is due to its great distance from the Sun, requiring it to travel a much longer path than the other planets.
Tips
A common mistake is confusing Neptune with Uranus or Saturn due to their relatively long orbital periods.
Sources
- How Long is a Year on Other Planets? | NASA Space Place - spaceplace.nasa.gov
- Solar System data | Royal Museums Greenwich - rmg.co.uk