Stars and Binary Stars

Existing content focuses on magnitude, composite brightness, and the projection of binary star orbits on the sky.

You can learn angular distance first; the internal structure and evolution of stars are not included here yet.

Let’s look at the phenomena in life first →

• If two lights light up together, why can't their "magnitudes" be added together?

  The readings are first converted back to the amount of light recovered, then added together to give the total amount of light a magnitude.

• When two stars orbit around each other, why do the orbits seen through a telescope become flattened?

  The true orbit has an inclination; what the telescope gives you is its projection on the vertical plane of view.