According to the diagram, where do all stars begin their evolution?
(1 point)
stellar nebula
red giant
supernova
white dwarf
To find out where all stars begin their evolution according to the diagram, we need to analyze the given options: stellar nebula, red giant, supernova, and white dwarf.
First, let's understand what each of these terms means in the context of stellar evolution:
1. Stellar nebula: A stellar nebula is a large cloud of gas and dust in space. It is the birthplace of stars, forming from the remnants of previous generations of stars.
2. Red giant: A red giant is a stage in the life cycle of a star that occurs after it exhausts its hydrogen fuel. During this stage, the star expands and cools, becoming larger and redder.
3. Supernova: A supernova is a powerful and explosive event that occurs at the end of a massive star's life. It involves a cataclysmic explosion and results in the release of an enormous amount of energy.
4. White dwarf: A white dwarf is the remains of a star after it has exhausted its nuclear fuel. It is a small, dense, and hot object that has collapsed under its own gravity.
Based on this information, we can conclude that the correct answer is "stellar nebula" since it is the initial stage where stars form. Therefore, according to the diagram, all stars begin their evolution in a stellar nebula.