Question

Use the diagram to answer the question.

The life trajectory of a stellar nebula is shown. The stellar nebula, a purple gas ball turns into an average star, depicted as a yellow circle, within 500 million years. The average star turns into a red giant, depicted as a medium sized red circle, within 10000 million years. The red giant turns into a planetary nebula, a bright star surrounded by green and blue gases, within 1000 million years. And the planetary nebula gradually cools into a white dwarf, depicted as a small white circle. The stellar nebula can also turn into a massive star, depicted as a medium blue circle, within 0.1 million years. The massive star turns into a red supergiant, depicted as a large orange circle, within 15 million years. The red supergiant turns into a supernova, a bright white star, within 1 million years. The supernova can either turn into a neutron star, depicted as a yellow sphere with white rays coming out of its sides, or a black hole, a small black circle surrounded by purple rays.

Which of these can a star become at the end of its evolution? Choose the three correct answers.

(2 points)
Responses

a neutron star
a neutron star

a brown dwarf
a brown dwarf

a black hole
a black hole

a white dwarf
a white dwarf

a supernova
a supernova
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Answer 1

At the end of its evolution, a star can become the following:

1. **A neutron star** - This is one of the possible outcomes after a supernova for massive stars.
2. **A black hole** - This is another possible outcome after a supernova, specifically for very massive stars.
3. **A white dwarf** - This is the final stage for average stars after they evolve from a planetary nebula.

The correct responses are:
- a neutron star
- a black hole
- a white dwarf

Therefore, the responses **a neutron star**, **a black hole**, and **a white dwarf** are the three correct answers.