Physics – National Radio Astronomy Observatory

At What Distance Can We Detect a Nuclear Explosion in the Universe?

Let’s start with a modest example. A large nuclear bomb (say 1 megaton of TNT) releases roughly: E_(bomb)=4.18×10^(15) Joules…

The metallicity of a star does not significantly affect its mass after formation but strongly influences how its mass…

I believe that you can use the principle of similar triangles to solve this problem. Let D_sun be the…

A Tatooine-like planet, or a planet that orbits a binary star system, would very likely orbit at a relatively…

To varying degrees radio astronomical measurements are affected by the Earth’s atmosphere, including changes in water vapor content. These…

I believe what you are seeing is the apparent “retrograde”, or backwards, motion of Mars as the Earth overtakes…

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