If you start to think about how these lengths of time are defined it becomes clearer.
1 day = time to rotate on it’s axis once
1 year = time to complete a full rotation around the sun
For Earth, it takes us ~24hrs to rotate on our axis and 365.25 days to orbit the sun.
However, because Venus’ axial rotation is so slow (and another interesting fact, it rotates in the opposite direction to other planets) it actually completes a full orbit of the sun before 1 axial rotation.
Hence, a year is shorter than a day
For those interested:
1 Venus day = 243 earth days
1 Venus year = 225 earth days
A day on Venus is longer than a year on Venus.
If you start to think about how these lengths of time are defined it becomes clearer.
1 day = time to rotate on it’s axis once 1 year = time to complete a full rotation around the sun
For Earth, it takes us ~24hrs to rotate on our axis and 365.25 days to orbit the sun.
However, because Venus’ axial rotation is so slow (and another interesting fact, it rotates in the opposite direction to other planets) it actually completes a full orbit of the sun before 1 axial rotation.
Hence, a year is shorter than a day
For those interested:
1 Venus day = 243 earth days 1 Venus year = 225 earth days
Wow! That’s another thing I learned from QI recently. Great fact though, and nice to see it mentioned here 🙂