Venus spins so slowly on its axis that a single Venusian day lasts longer than its entire orbit around the Sun.
It takes Venus 225 Earth days to complete one orbit around the Sun, but it takes 243 Earth days to rotate once on its axis—and it spins backward compared to most planets, making the Sun rise in the west.
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Quick Guess: How many Earth days do you think 1 day on Venus lasts?
Verified Answer: 243 days
Quiz Question: Approximately how many Earth days does Venus take to rotate once on its own axis?
Correct Answer: 243 days
Venus takes 243 Earth days to spin once on its axis and 225 days to orbit the Sun.
A magnetar's magnetic field is so extreme that even 1,000 kilometers away, spherical electron clouds around atoms are deformed into needle-thin cylinders.
Because Titan has thicker nitrogen air and just 14% of Earth's gravity, giant liquid methane raindrops drift gently downward about 6 times slower than Earth rain.
The bootprints left by Apollo astronauts on the Moon in 1969 remain virtually untouched to this day.
Combined together, Earth, Jupiter, Saturn, and every asteroid account for only 0.14% of the Solar System's total mass.