Scientists are worried because Venus' rotation has slowed down!
Venus, the second planet from the sun, was originally measured to rotate the sun every 243.0185 Earth days. Unfortunately, scientists have discovered that over the past 16 years, that number has changed. The planet Venus has slowed down it's yearly rotation by a total of 6.5 minutes!
This number may seem small and insignificant, but consider the fact that Earth's yearly rotation varies only a few MILLISECONDS every year, depending on how extreme our weather conditions are.
Scientists are guessing that the reason for this dramatic slowed down cycle is because of the intense weather conditions that have shifted most of the planet's materials, dramatically altering how the sun's gravity is effecting the planet.