There are many ways to age the earth and the universe… Science uses only the methods that support their hypothesis of an old earth/universe. Science is the observation of nature with theories to explain what is observed. Very few of these theories can be proven.
Radiometric dating, which examines the half-live’s of decaying atoms, focuses primarily on Uranium-lead isotopes. The premise is that the change of uranium into lead takes 4.5 billion years for each half-life. There can be 10 or more half-lives, so the full transfer of uranium into lead will take 45 billion years. This is the theory. This theory is presented because it supports the idea of evolution.
Through the exact same procedure (the decay of Uranium), an alpha decay will produce hydrogen atoms. The change of uranium into hydrogen takes only thousands of years; and because hydrogen is a gas, you cannot know for certain exactly how much hydrogen has escaped.
There are multiple ways to determine the age of the earth. Helium in the Atmosphere demonstrates thousands of years, not billions. Salt in the ocean demonstrates thousands of years, not billions. Space dust and sediment demonstrates thousands of years, not billions. Ocean floor ages demonstrate thousands of years, not billions. The earth's magnetic field demonstrates thousands of years, not billions.
The universe also demonstrates many different young ages. The most complex issues relate to the speed of light, and how long it takes for light to reach earth from its distant location. It has been clearly demonstrated, though, that time acts differently in different locations. This is true on earth, and it is also true in the universe. Stephen Hawking’s and Albert Einstein both predicted that this would be the case, and it is. For a Christian perspective on this, read Dr Russell Humphries book,
Starlight and Time. (Also available on a video below)
I am personally not convinced in a literal six day creation. I think each creative day lasts for a thousand years, as Peter said… “O
ne day is with the Lord as a thousand years, and a thousand years as one day” (2 Peter 3:8). The sediment in the Grand Canyon, and elsewhere, appears to have been formed prior to the flood, not at the flood (as many creationists teach). There are
NO land animal fossils found in the sediment of the Canyon until you get up close to the top. The same is true at Australia’s Carnarvon Gorge. Hundreds of meters of sediment (with marine fossils) were not placed there in one day. This suggestion makes it impossible for scientists to take genesis seriously. I don’t believe the genesis account requires us to believe in a literal six day creation. In genesis 2:1 it says that the heavens and the earth were created in ONE DAY. This is obviously symbolic, and so too were the creative days symbolic. They were likely, as Peter said, 1000 years each day.
God Bless
Steve