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roamer65

(36,745 posts)
1. They just started Southern Hemisphere summer a few minutes ago.
Sun Dec 22, 2019, 12:27 AM
Dec 2019

It’s gonna be awful down under this summer. God be with you all.

roamer65

(36,745 posts)
3. At your summer solstice, you are 2.5 million closer to the Sun than we are at ours.
Sun Dec 22, 2019, 12:35 AM
Dec 2019

That differential is going to make a lot more difference over the coming years, sadly. By changing the composition of Earth’s atmosphere, it is literally moving the “Goldilocks zone” of the planet.

roamer65

(36,745 posts)
5. It is all a function of distance and atmospheric composition.
Sun Dec 22, 2019, 01:26 AM
Dec 2019

Last edited Sun Dec 22, 2019, 02:11 AM - Edit history (1)

Venus is about 66 million miles away from the Sun, 96.5 percent of the atmosphere is CO2, with a surface temperature of around 872 deg F. Lead would melt on its surface.

Venus would slowly cool if it were farther away from the Sun, but that would depend on how far you move it.

As we increase our greenhouse gases, we would need to move Earth farther from the Sun to maintain the same environmental conditions. I suspect about a a 3-4 million mile shift would be needed right now.

Jim__

(14,077 posts)
6. The earth's orbit is elliptical and is closest to the sun at about the December solstice.
Sun Dec 22, 2019, 07:18 AM
Dec 2019

This article talks about it a little bit here.

A short excerpt:

?1

The Earth is closest to the Sun, or at the perihelion, about 2 weeks after the December Solstice, when it is winter in the Northern Hemisphere. Conversely, the Earth is farthest away from the Sun, at the aphelion point, 2 weeks after the June Solstice, when the Northern Hemisphere is enjoying warm summer months.
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