Physics – Page 3 – National Radio Astronomy Observatory

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…

I believe that this question has been answered in Smithsonian Magazine.

To calculate the relative amount of gravitational pull that Jupiter and Saturn exert on the Earth relative to the…

The solar-induced magnetic storms that produce the Northern (Southern) Lights, or Aurora Borealis (Australis), are generated when electrons from…

In fact, no. At least if we are talking about another planet, call it an “invisible twin”, on the…

Yes, though the formation process for such a system is rather difficult to construct, making such binary planet systems…

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