Uploaded July 2026 | Updated September 2026, 2 weeks ago
Billions of years from now, the Sun will undergo a dramatic transformation as it expands into a red giant. During this final stage of its life, Mercury and Venus are expected to be completely engulfed, while Earth's fate remains uncertain—it may either be swallowed by the expanding Sun or survive as a scorched, lifeless world. This incredible process, often described as **planetary cannibalism**, reveals the inevitable evolution of stars and the fragile future of our Solar System. In this video, we'll explore the science behind the Sun's expansion, what will happen to each planet, and why astronomers believe this cosmic event is unavoidable.
Billions of years from now, the Sun will undergo a dramatic transformation as it expands into a red giant. During this final stage of its life, Mercury and Venus are expected to be completely engulfed, while Earth's fate remains uncertain—it may either be swallowed by the expanding Sun or survive as a scorched, lifeless world. This incredible process, often described as **planetary cannibalism**, reveals the inevitable evolution of stars and the fragile future of our Solar System. In this video, we'll explore the science behind the Sun's expansion, what will happen to each planet, and why astronomers believe this cosmic event is unavoidable.
