Earth Can Do Without Moon

Scientists have long believed that, without our moon, the tilt of the Earth would shift greatly over time, from zero degrees, where the Sun remains over the equator, to 85 degrees, where the Sun shines almost directly above one of the poles. However, new simulations show that, even without a moon, the tilt of Earth’s axis would vary only about 10 degrees. The influence of other planets in the solar system could have kept a moonless Earth stable. The study also showed that if the earth rotated around the sun in the opposite direction, in a retrograde orbit, it would have no need of the Moon. Scientists believe that at least 80 or 90 percent of the planet doesn’t need a satellite to have a stable climate. The new research also suggests that moons are not needed for other planets in the universe to be potentially habitable.