I believe that the definition of antipodal positions is that for a (latitude,longitude) position on the Earth’s surface its…
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Temperature Required to Fuse Hydrogen on Earth (Clarification)
I believe that my answer to the question What is the Minimum Temperature Required to Fuse Hydrogen Atoms? referred…

The Difference Between Brightness and Flux Density
You are correct in that brightness (you used the term “intensity”) is independent of distance, but flux density is…

What Would Happen if the Earth Stopped Rotating?
I believe that this question has been answered in Smithsonian Magazine.

How Much Do Jupiter and Saturn Pull the Earth Away From the Sun?
To calculate the relative amount of gravitational pull that Jupiter and Saturn exert on the Earth relative to the…

How Much Power is Generated by the Aurora Borealis?
The solar-induced magnetic storms that produce the Northern (Southern) Lights, or Aurora Borealis (Australis), are generated when electrons from…