Research studies indicate that our sun is gradually shrinking at a steady rate of seconds of arc per century. At its rate of shrinkage, as little as 50,000 years ago the sun would have been so large that our oceans would boil. But in far less than 50,000 years, life here would have ceased to exist.
By analyzing data from Greenwich Observatory in the period 1836 – 1953,
John A. Eddy [Harvard-Smithsonian Center for Astrophysics and High Altitude Observatory in Boulder]
and Aram A. Boornazian [mathematician with S. Ross and Co. in Boston]
have found evidence that the sun has been contracting about 0.1% per century during that time,
corresponding to a shrinkage rate of 5 feet per hour.
And digging deep into historical records, Eddy found 400-year-old eclipse observations
that are consistent with such a shrinkage. (Source: ”Sun is Shrinking”, Physics Today, September 1979)
Extrapolating back, 100,000 years ago, the sun would have been about twice its present size, making life untenable.
The Moon is slowly receding from Earth at about 4 cm (1.5 inch) per year,
and the rate would have been greater in the past.
The Moon could never have been closer than 18,400 km , known as the Roche Limit,
because Earth’s tidal forces would have shattered it.
(Source: Jonathan Sarfati, Creation Ex Nihilo, September 1979)
Taking into consideration this rate, only 20 – 30,000 years ago the Moon would have been so close to our planet that it would have fallen into the Earth. Therefore, neither the Earth nor the Moon can be billions of years old.