Comets cannot be more than a few thousand years old or they would all have disintegrated.
- Spiral galaxies rotate much too quickly for an old universe. They would be twisted beyond recognition if they were really as old as secular astronomers claim.
- The magnetic fields of planets and moons in our solar system are consistent with their age of a few thousand years, but are much too strong for an age of billions of years.
- The debris shed by disintegrating comets is what causes meteor showers. Since earth intersects such a debris field once each year, most meteor showers are annual.