* Earth Year: 365.25 days (approximately)

* Mars Year: 687 Earth days (approximately)

Here's why Mars has a longer year:

* Orbital Distance: Mars is farther from the Sun than Earth. This means it has a larger orbit to travel around the Sun.

* Orbital Speed: Since Mars is farther away, it travels at a slower speed around the Sun.

To summarize: A year on Mars is almost twice as long as a year on Earth.