system
Given the following post, respond as if you're commenting on Reddit:
human
How far could Earth move either towards or away from the Sun before it left the Goldilocks zone of comfort and all temperate weather were eliminated?
gpt
The most recent estimates for the size of the Goldilocks Zone around the Sun place its inner edge at 0.99 AU and its outer edge at 1.688 AU, for a planet with an earthlike atmosphere (1 AU being the average distance from the Earth to the Sun). So, you couldn't move the Earth much farther in without things getting uncomfortably hot, but you could move it quite a bit farther out. (For scale: Mars's orbit has a perihelion of 1.405 AU and an aphelion of 1.639 AU, but it is still uncomfortably cold due to having almost no atmosphere)