The theory that the Moon is moving away from Earth at a rate of approximately 3 cm per year is still valid despite the recent news about the Moon being closer to Earth. It's essential to understand the factors that influence the Moon's distance from Earth.
The Moon's distance from Earth does not remain constant due to various factors, including gravitational interactions between the Earth, Moon, and other celestial bodies. These interactions can cause the Moon's orbit to vary over time, resulting in changes in its distance from Earth.
The news about the Moon being closest to Earth since 992 AD and the prediction for it to be closer by another 9 km in 2368 AD are specific occurrences or predictions based on the Moon's complex orbital dynamics. These events do not negate the overall trend of the Moon moving away from Earth on average.
The Moon's distance from Earth has been measured and studied extensively over many years. These observations, along with lunar laser ranging experiments, have confirmed that the Moon's average distance from Earth is increasing at a rate of about 3.8 centimeters per year. This phenomenon is primarily caused by tidal forces.
Tidal interactions between the Earth and Moon result in a transfer of energy, causing Earth's rotation to slow down gradually and the Moon to move into a higher orbit. As a consequence, the Moon recedes from Earth over time.
While there may be temporary fluctuations or variations in the Moon's distance from Earth, the long-term trend remains consistent with the theory that the Moon is moving away from our planet at an average rate of approximately 3 cm per year.