Young-Earth creationists (YECs) believe that God created the Earth and all life on it in six 24-hour days, exactly as described in Genesis, and that the universe (and by extension the Earth) is less than 10,000 years old.
Scientific difficulties with Young Earth Creationism
Speed of Light
One problem with Young Earth Creationism is with light. Supposedly, the Earth is 10,000 years old. Since light travels in light years, we would only be able to see stars that are less than 10,000 light years away. The Great Andromeda Galaxy is 2 million light years away. Other galaxies are even further away. Some scientists have even saw some stars about 13 billion light years away from the Earth. If the universe was only 10,000 years old, the light from these objects would not be able to be seen by telescopes.
Big Bang Problem
Models of the Big Bang show that it happened about 13.7 billion years ago. This is, by far, much older than what creationists say. The evidence about this is all on the Big Bang side.
Other Scientific Difficulties
- Radiometric dating show that the Earth and solar system are over 4 billion years old. Geologists see evidence of many different geological processes taking place over millions of years, hundreds of millions of years and thousands of millions of years. Is it likely that so many respected scientists are wrong and a few theologians are right?
- Fossil remains and artifacts in the Americas show that humanity migrated to the Americas thousands of years before Young-Earth creationists believe when the Earth was created. Does the biblical textual evidence outweigh physical evidence?