There are about different elements on Earth that we know about so far. Read more: Explainer: what is radiocarbon dating and how does it work? But there is a second sort of element that actually changes into something else over time. Imagine that - some part of you is actually changing into something else! Some take billions of years to do any really serious changing.
Your teeth have an element called potassium that is one of these changing elements. Your TV, computer, the soil in your garden — everything, really — has some of these changing elements.
As you might have guessed, rocks also have these unstable elements in them. Progressive Creation : This is the idea that God created various creatures to replace other creatures that died out over millions of years. Theistic Evolution : This is the idea that God used the process of evolution over millions of years involving struggle and death to bring about what we see today. All these ideas put death and bloodshed before sin. Instead of compromising, we need to accept what God has plainly revealed to us through His Word—the world is about 6, years—not billions of years—old.
And true science supports this conclusion! Today, many people choose to reject the Word of God in favour of their own opinions. Our first parents, Adam and Eve, were the very first compromisers.
Samples returned from the Apollo and Luna missions revealed ages between 4. How the moon formed is a matter of debate; while the dominant theory suggests a Mars-size object crashed into Earth and the fragments eventually coalesced into the moon , other theories suggest that the moon formed before Earth.
Related : How was Earth formed? In addition to the large bodies of the solar system, scientists have studied smaller rocky visitors that have fallen to Earth.
Meteorites spring from a variety of sources. Some are cast off from other planets after violent collisions, while others are leftover chunks from the early solar system that never grew large enough to form a cohesive body. Although no rocks have been deliberately returned from Mars , samples exist in the form of meteorites that fell to Earth long ago, allowing scientists to make approximations about the age of rocks on the Red Planet.
Some of these samples have been dated to 4. More than 70 meteorites that have fallen to Earth have had their ages calculated by radiometric dating. The oldest of these are between 4. Fifty thousand years ago, a rock hurled down from space to form Meteor Crater in Arizona. Shards of that asteroid have been collected from the crater rim and named for the nearby Canyon Diablo.
The Canyon Diablo meteorite is important because it represents a class of meteorites with components that allow for more precise dating. In , Clair Cameron Patterson, a renowned geochemist at the California Institute of Technology, measured ratios of lead isotopes in samples of the meteorite that put tight constraints on Earth's age. Panspermia involves the transportation of microorganisms throughout space, by dust, meteoroids, asteroids , comets , planetoids, or spacecraft.
Life may have evolved on Earth by this method, and given the vastness of the Universe and ancient planets such as PSR B b, it is quite a realistic possibility. How Old is the Earth? How Long has there been Life on Earth? Who Discovered the Age of the Earth? What is the Oldest Planet? Did you know? There are more individual viruses on Earth than all the estimated stars in the Universe. This means that there are more viruses than all the grains of beach sand on our planet.
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