If Jupiter's Orbit got Weirder, it Would Actually Make Earth More Habitable - by BrianKoberlein
Interestingly, for the Northern Hemisphere, it is Summer when the Earth is a bit farther from the Sun, and that means Northern Summers are just slightly longer than Southern Summers. Since more of the land mass on Earth is in the Northern Hemisphere, that means Earth is a bit more habitable than it would be if we had a circular orbit. It doesn’t affect our daily lives, but it does come into play on geological scales.
This has big implications for potentially habitable worlds in other star systems. Although we tend to focus on whether a world is within the habitable zone, that’s only the first requirement for a truly habitable world. Other factors such as insolation depend on the presence of other planets in the system. There’s a gravitational dance between worlds that can make or break a planet’s chances for life.
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