Indeed, although Jupiter’s gravity would not cause earthquakes or volcanoes, it does provide a slight nudge to our orbit, and over ten’s of millions of orbits can produce a significant change in climate. Another more important factor is that the Earth is not a perfect sphere, it’s center of gravity wobbles over the 24 hour cycle as well as the moon’s 28 point something day cycle. As to extent, welllll, that involves the n-body gravity solution … something that’s never been solved in the classical universe.
The sun is burning hotter, on average, as time passes. It’s certainly important to consider if we’re speaking to climate change over billions of years. I think that’s safely ignored if we’re sticking to the short time period of the post-Cambrian ‘era’. Far more important to climate of the past 100,000,000 years is the sun’s irregular and unpredictable output.
If and when we get these “climate change alarmists” to focus on mitigation efforts, they get our full cooperation. Here’s the rub, we want all these efforts to be put in place right now, but OUR reasons have nothing to do with global warming … and that so angers the alarmists so bad as to bring about an entire Pit thread just to condemn one of us.
… and they call us ignorant …
I’m sorry, we just suffered an ice storm that killed a few people … with global warming this won’t happen … maybe I’m just a softie, but if ice causes needless human suffering, I say be rid of it … belch that CO[sub]2[/sub], cook the arctic wastelands … global warming is a good thing, we’re at the dawn of a new era of prosperity blah blah blah