Stars go through a sort of "life cycle". They start out as a small blue star, then go to yellow and red, getting bigger as they go. they then shrink into a white dwarf star. This is simplified, but sufficient for our purposes. According to evolutionists, this process takes millions to even billions of years to go from phase to phase.
The star Sirius is a white dwarf star. However, ancient writings (by such people as Cicero, Seneca, and Ptolemy) described it as red. This was only a couple of thousand years ago, not millions.
All this to say that at least the theory of stars "living" for billions of years may be flawed.
Jupiter is cooling off. We can assume it has been cooling off since it was formed. If it is still cooling off and is eons old, it would have had to have been really, really, REALLY, hot to start out with.
The moon is getting farther away from the earth over time. Every year it is a little farther from the earth. Extrapolating this backwards, 1.2 billion years ago the moon would be touching the earth. Needless to say, way before that we would have some serious tidal issues, to the point of no life being possible on earth. Evolutionists claim the earth/moon is 4.5 billion years old. Do the math - something's wrong there.
The earth itself is slowing down. This means... wait for it... it used to be going faster! wow! At the rate it is slowing down, putting the earth at about 6,000 years old is no problem. However, a few billion years ago, the earth would have been spinning extremely fast.
The oceans are 3.6% salt. Extrapolating the rate that salt is being added to the oceans, they would have been fresh water about 5000 years ago. What was going on for the 4,499,995,000 years before that? Was there no salt washing into the oceans before that?
These next points don't really make an argument, but they are interesting.
The oldest living organism, a bristlecone pine known as Methuselah, is estimated to be about 4500 years old. Coincidently, that is about when the great flood is estimated to have occurred. If there was no flood and the earth is billions of years old, why aren't there any older organisms on the earth?
The largest coral reef in the world, the Great Barrier Reef, is estimated to be 4200 years old. Why isn't there an older one somewhere?
