Summary:
- Astronomers have discovered a small asteroid that has become a temporary "mini-moon" orbiting Earth.
- The asteroid, named 2020 CD3, is estimated to be between 6 and 12 feet (2 to 4 meters) in diameter and has been orbiting Earth for the past three years.
- This discovery provides valuable insights into the dynamics of the Earth-moon system and the formation of natural satellites, which can help scientists better understand the evolution of our solar system.