Here's what happens when people look outside the bible for definitive answers. How did those things happen in such a short period of time? It's called a worldwide flood, you know a cataclysm. The entire earth was covered with water, every human and animal on the planet not inside the ark were killed, and the earth was forever changed. In that flood you had incredible geological occurances take place as well as the fossil record laid down.
Noone can prove that the earth isn't old? How do you figure? I can do so using only one thing - God's word. It plainly declares the age of the universe to be a little over 6,000 years old. I believe it. I wish you did too.
Many of the geological upheavals we see simply COULD NOT have occurred overnight...such things as the formation of "Devil's Tower" of
Close Encounters Of The Third Kind fame. Any force, including floodwaters strong enough to have washed the resta the mountain from that 'tower' woulda washed it away as well. Same for the Grand Canyon. The forse of the waters woulda carried away ALL the rock, not merely cut a gorge into it.
Noah's flood was violent over mucha the world. Proof is seen in Canada, where there are some house-size boulders that have been carried some 50 miles from their "homes". In nature, only water can move a rock that size without breaking it.
There are millions & millions of fossils in thousands of museums, classrooms, & private collections worldwide. They would not exist if GOD hadn't preserved them. Now, GOD does NOTHING man knows about without a reason, and I believe His reason for creating & preserving these fossils was to show us tangible, empirical evidence of past ages. I mean. He even saw to it that some specimens of soft invertebrates such as jellyfish were fossilized! A large quantity of fossilized jellyfish were found in Mt. Simon-Wonewoc in central Wisconsin, in rock much-older than 6K years.
Over 9/10 of all the animal species that we know ever existed are now extinct. But Scripture sez that Noah had at least one pair of EVERY land animal or bird aboard the ark. Thus, those ancient species were extinct before Noah's time, and the men of that day could not have killed off that many animal species had they united in an attempt to do so.
Then, there's the limit of the speeda light. Light travels its fastest in a vacuum, and God has allowed us to discover that speed is some 186 K miles per second. Astronomy uses several methods such as triangulation, parallax, inverse-square law, etc. to measure the approximate distance to the stars. Using these methods, it's found that the farthest object we can see with the unaided eye, the Andromeda galaxy, is so distant that it takes light from it about 2.5 million years to reach us. (This galaxy is 10 times the size of our own Milky Way galaxy.) The glow in the night sky we call the Milky Way, part of our own galaxy, is an average of about 30 K light-years distant.
Man has unsuccessfully tried many methods to try to speed up light and other rays past its upper speed limit, so we must conclude this upper limit is one of GOD'S laws of physics. And we should conclude that He has allowed to discover these various laws, and all our knowledge of physics, astronomy, geology, and archaeology for a reason. He has caused us to draw the conclusion that the earth is very old because that's His will...otherwise, He would be deceiving us, and that's something He DOES NOT DO. just as we can believe every word He's caused to be written, we can believe those phenomena He has shown us by revelation, without the use of words.