physics – Page 7 – National Radio Astronomy Observatory

How Does Light From Distant Stars Remain Coherent?

Since the light from a distant star is a point source for any measurement that we want to make,…

This is actually an application of spherical trigonometry. A good description of this calculation, including an online tool to…

I don’t believe that the scenario you describe, were a moon is effectively shared by two planets in a…

I found two satellite systems that appear to measure EUV emission. The Ionospheric Connection Explorer (ICON) and the Geostationary…

Actually, this question has been quite well answered on INSH. Basically, it would be all bad. One side of…

I believe that by definition the electromagnetic spectrum runs from 0 to infinite frequency or wavelength. There are practical…

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