What ways can we observationally probe what is happening inside of stars as they evolve off the main sequence and thereby directly test the predictions of stellar evolution theory?

1 Answer
Feb 11, 2017

Answer:

We do not need to look at the stars to understand what is happening inside it.

Explanation:

Let's take an example of the sun. The sun is quite simply a giant nuclear fusion reactor. A combination of chemistry and physics gives us the answers we need for the sun and most stars. We do not yet understand pulsars, neutron stars and a few others. By knowing the mass of the sun we know both its history and its future. That's how we can observe what's happening inside the stars.