The formation of the Earth approximately 4.5 billion years ago refers to its origin in the context of the solar system's formation. However, it does not necessarily imply that the Earth will be destroyed precisely 4.5 billion years from now.
The long-term future of the Earth is influenced by various factors, including geological processes, astronomical events, and the evolution of the Sun. Over an extremely long time scale, geological processes such as plate tectonics and erosion can alter the Earth's surface. Astronomical events like asteroid impacts or volcanic activity could also potentially affect the planet.
Additionally, the evolution of the Sun plays a crucial role in the Earth's future. The Sun is gradually increasing in luminosity over time as it consumes its nuclear fuel. In approximately 5 billion years, the Sun will enter a phase known as the red giant phase, where it will expand and likely engulf the inner planets, including Earth.
However, it's important to note that these events are estimated to occur billions of years in the future, and the specific timelines and outcomes are subject to scientific uncertainty. The Earth's ultimate fate depends on numerous complex factors that are still being studied and researched by scientists.