Book 8, Question 44
Why Does the Moon Help Keep Earth’s Tilt Steadier?
The Moon helps keep Earth's tilt steady! Its gravity acts like a stabilizing buddy for the way Earth leans as it spins. A steadier tilt helps our seasons stay more predictable over very long ages.
More fun facts
- The Moon helps keep Earth's tilt steady, which keeps our climate more stable.
- Without the Moon, scientists estimate Earth's tilt could have swung by as much as 85 degrees, causing wild changes in climate.
- Changes in Earth's tilt affect how sunlight is spread over the planet and can help bring on or end ice ages.
- The Moon also sets the rhythm of our tides.
- Computer models suggest only about 10 percent of planets might have a big moon that steadies their tilt.
- More than 190 moons orbit planets and asteroids in our solar system, and Earth's Moon is the fifth largest.
Sources: NASA Science, National Geographic, Scientific American
Questions kids ask
What would happen to Earth without the Moon?
Its tilt could swing wildly, causing big swings in climate.