Opinions on Stellar evolution

Here you have a list of opinions about Stellar evolution and you can also give us your opinion about it.
You will see other people's opinions about Stellar evolution and you will find out what the others say about it.
Also, you will see opinions about other terms. Do not forget to leave your opinion about this topic and others related.

Stellar evolution is the process by which a star changes during its lifetime. Depending on the mass of the star, this lifetime ranges from a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the age of the universe. The table shows the lifetimes of stars as a function of their masses. All stars are born from collapsing clouds of gas and dust, often called nebulae or molecular clouds. Over the course of millions of years, these protostars settle down into a state of equilibrium, becoming what is known as a main-sequence star.

Nuclear fusion powers a star for most of its life. Initially the energy is generated by the fusion of hydrogen atoms at the core of the main-sequence star. Later, as the preponderance of atoms at the core becomes helium, stars like the Sun begin to fuse hydrogen along a spherical shell surrounding the core. This process causes the star to gradually grow in size, passing through the subgiant stage until it reaches the red giant phase. Stars with at least half the mass of the Sun can also begin to generate energy through the fusion of helium at their core, whereas more-massive stars can fuse heavier elements along a series of concentric shells. Once a star like the Sun has exhausted its nuclear fuel, its core collapses into a dense white dwarf and the outer layers are expelled as a planetary nebula. Stars with around ten or more times the mass of the Sun can explode in a supernova as their inert iron cores collapse into an extremely dense neutron star or black hole. Although the universe is not old enough for any of the smallest red dwarfs to have reached the end of their lives, stellar models suggest they will slowly become brighter and hotter before running out of hydrogen fuel and becoming low-mass white dwarfs.

Stellar evolution is not studied by observing the life of a single star, as most stellar changes occur too slowly to be detected, even over many centuries. Instead, astrophysicists come to understand how stars evolve by observing numerous stars at various points in their lifetime, and by simulating stellar structure using computer models.

In the image below, you can see a graph with the evolution of the times that people look for Stellar evolution. And below it, you can see how many pieces of news have been created about Stellar evolution in the last years.
Thanks to this graph, we can see the interest Stellar evolution has and the evolution of its popularity.

What do you think of Stellar evolution?

You can leave your opinion about Stellar evolution here as well as read the comments and opinions from other people about the topic.
It's important that all of us leave our opinions about Stellar evolution to have a better knowledge about it: