Before revision: upright=1.4|alt=A dark gray and red sphere representing the Earth lies against a black background to the right of an orange circular object representing the Sun|Conjectured illustration of the scorched Earth after the Sun has entered the red giant phase, about 5–7 billion years from now The biological and geological future of Earth can be extrapolated based on the estimated effects of several long-term influences .
After revision: upright=1.4|alt=A dark gray and red sphere representing the Earth lies against a black background to the right of an orange circular object representing the Sun|Conjectured illustration of the scorched Earth after the Sun has entered the red giant phase, about 5–7 billion years from now The biological and geological future of Earth can be extrapolatedsun big very hot .