The Earth is estimated to be around 4.5 billion years old, and the amount of time it has left to live is a hotly debated topic. How much longer will Earth live? Scientists have estimated that the Earth has approximately four billion years left before it becomes uninhabitable.

The primary factor in determining how much longer Earth will live is the Sun. As the Sun ages, it will become brighter and hotter, increasing the surface temperature of the Earth. This will cause a runaway greenhouse effect, leading to temperatures on Earth’s surface that are hotter than those on Venus today. This will make the Earth uninhabitable and all life on it will be extinct.

The Sun is currently in its main sequence stage, which is the longest stage of its life. During this stage, the Sun will slowly increase in brightness and temperature. This will cause the Earth’s atmosphere to become thicker and more dense, trapping more heat and increasing the Earth’s surface temperature.

As the Sun continues to age, it will eventually enter the red giant stage. During this stage, the Sun will become much brighter and hotter, and its outer layers will expand to engulf the Earth. This will cause the Earth’s surface temperature to become much hotter than it is today, making it uninhabitable.

In addition to the Sun’s aging, the Earth is also slowly cooling down due to its internal heat. This cooling will eventually cause the Earth’s surface temperature to drop below the freezing point, making it uninhabitable.

The Earth’s fate is ultimately determined by the Sun. As the Sun continues to age, its brightness and temperature will increase, eventually leading to a runaway greenhouse effect and temperatures on Earth’s surface that are hotter than those on Venus today. This will make the Earth uninhabitable and all life on it will be extinct. Scientists estimate that this will happen in approximately four billion years.

In conclusion, the Earth has approximately four billion years left before it becomes uninhabitable. This is due to the Sun’s aging, which will cause its brightness and temperature to increase, leading to a runaway greenhouse effect and temperatures on Earth’s surface that are hotter than those on Venus today. The Earth’s internal heat will also eventually cause its surface temperature to drop below the freezing point, making it uninhabitable. As such, the answer to the question “How much longer will Earth live?” is approximately four billion years.