How old is the planet Earth estimated to be?

The age of the planet Earth is estimated to be around 4.5 billion years based on various scientific methods, including radiometric age dating of the oldest rocks and minerals found on Earth, as well as meteorites that have been dated to be from the same time period as the formation of the solar system. Additionally, the oldest samples from the Moon, which provide further evidence, align with this estimate, reinforcing our understanding of the timeline of Earth's formation in relation to its celestial neighborhood.

This age estimation is significant because it helps scientists understand the geological and biological processes that have occurred over Earth's history. It places the development of the Earth within the broader context of the solar system's evolution, including the formation of the Sun and other planets.