The universe is 13.7 billion years with a margin of error of less then 1%.
The Earth 4.7 billion.
We know the time it took for our solar system to form. We know how our solar system formed. We know the conditions of the early earth and that the moon was formed by a collision with a planet the size of mars. We know tons of debris was flying everywhere in space at the time of the formation of the solar system. For one, hence all the craters in the moon and that was billions of years ago. We also now the moon was closer and is drifting away from us. We also know the sun is 5 billion years old and will burn for another 5 with a life of 10 billion before it goes red giant.
We know there have been at least five mass extinctions on the planet. and life evolved back from each extinction event.
We know life COULD NOT survive the early earth until the planet cooled and the IRON core cooled for one to create the Van Allen belts to protect the surface from solar radiation. Everything would have been fried.
We also know we are carbon life forms and carbon come from supernova explosions as do all the heavy elements.
Back in the early 1800's they were studying the A Helderberg Escarpment and the formation of Niagara Falls. They named a park after one of my relatives and they were some of the first settlers of NY.
John Boyd Thacher State Park
However
"The Helderberg Plateau comprises mainly a series of
limestones of early Devonian age and is one of the most fossiliferous regions in the United States. The park is a window in to New York's geological history, the rocks here take us back in time hundreds of millions of years. In the park, you can see the Schenectady beds, the Roundout "waterlime" or dolostone, the upper and lower Manlius, and many other geological formations. The plateau also has rocks of the Upper Silurian and Upper and Middle Ordovician ages resting below the Devonian rocks.[4]"
John Boyd Thacher State Park - Wikipedia, the free encyclopedia
"The escarpment was formed more than 100 million years ago, when layers of limestone, sandstone, and shale were uplifted and eroded by wind, water, and other elements. As softer rock wore away, limestone broke off along vertical cracks, leaving a jagged, perpendicular wall. Thacher Park includes this escarpment and extends west along the wide, elevated plateau on top.
Early visitors were drawn to the Helderbergs by scientific interests. In the 1830s, geologists began studying the regions superb exposures of upper Silurian and Devonian strata and its extraordinary collection of marine
fossils. One prominent scientist called the Helderbergs a key to the geology of North America."
http://nysparks.com/parks/attachments/ThacherHistoryofThacherStatePark.pdf
There are also huge underground seabeds a MILE under the great lakes.
So in 1830 they knew the earth was at least millions of years old, yet you still have the very scientific illerate people caliming its 6000-to 10,000. THERE WERE PEOPLE THEN. We know a lot of what was going on then and before. This is just the tip of billions of facts.
That the YECers belief is even promoted is totally ridiculous to say the least.
If you go to the Channel Islands National Park in Cal they have The Pygmy Mammoth fossils.
"Approximately 40,000 to 20,000 years ago, a small group of 14-foot tall, 20,000-pound Columbian mammoths embarked on a journey that would eventually end in the development of a new speciesthe Channel Islands pygmy mammoth. Leaving the heavily grazed mainland behind, these Columbian mammoths swam towards the scents of abundant vegetation from the huge, mountainous island of Santarosae.
Approximately 20,000 years ago when sea level was about 300 feet lower than it is today, the four northern islands joined together to form an Ice Age superisland known as Santarosae. This island was only 6 miles from the mainland at its closest distance. As the ice sheets and glaciers melted and the sea level rose, only the highest parts of Santarosae remained as modern islands."
http://www.nps.gov/chis/historyculture/pygmymammoth.htm
and
The Valley of the Whales - Tour Egypt another place going back to the 1800's
"There is another even more ancient Egypt that is known to very few people. The Fayoum area contains some of the best preserved paleontological sites in the world one of which is Wadi Hitan or the Valley of Whales. This is a remote valley in the Western Desert of Egypt. At 150 kilometers southwest of Cairo, the valley is located near the Al-Katrani mountain range, a well known and valuable geological site for its rare vertebrate fossils and mega-fossils.
"Geological studies have been carried out in the area since the 1800's. The first skeletons of Basilosaurus were found around 1830 but were never collected due to the difficult accessibility to the site at that time. At first, it was thought to be a huge marine reptile, and hence was called the Basilosaurus meaning King Lizard. It was only later on that the species were identified as whales which at a certain point in history, moved easily between land and sea. The whale site and fossils at Wadi Hitan clearly portray the forms and modes of life during that transitional phase representing one of the major stories of mammal evolution: the emergence of the whale as an ocean-going mammal from a previous life as a land-based animal. In 1989, a research team led by D. Gingerich had found that the whales retained useless legs, feet, and toes representing rear legs that were later lost in the evolution cycle. Many of the whale skeletons are in good condition as they have been well preserved in the rock formations. Semi-complete skeletons are found in the valley in-situ and in some cases, even stomach contents are sometimes preserved."
The Valley of the Whales
These are just some of why we know these things, like ice core samples going back a million years. Its an insult to tons of scientists who have dedicated their lives to figuring out some of these mysteries and the shear amount of work that has been done.
This is 2014 and the earth is for a fact NOT 6 to 10 thousands years old.