The Jeans instability occurs when:
A. the pressure in a gas cloud is less than its gravitational force.
B. the pressure in a gas cloud is greater than its gravitational force.
C. the temperature in a collapsing cloud is hot enough to fuse hydrogen.
D. the temperature in a collapsing cloud is hot enough to fuse helium.
The birth, life, and death of stars is of interest to modern astrophysicists, who use various techniques ranging from optical telescopes to sophisticated space-bound devices to capture information. The two main forces that influence the course of a star's life are the pressure building up within the star itself, as well as the gravitational pull of the mass of this material.
Answer and Explanation: 1
The two forces, the pressure in the gas cloud, and the gravitational force due to the mass inside the cloud, act in opposite directions, that is, the...
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fromChapter 11 / Lesson 3
There are many different types of stars in the universe, including main sequence, dwarf, and giant stars . Learn about these different types and more, as well as the star life cycle, from formation until the end of their life.