Within a Star, Gravity Pulls Particles Inward, but at the Same

Q6: What is first-generation energy?

Q7: A cloud of interstellar gas and dust

Q8: The Sun is composed primarily of hydrogen

Q9: A _ is a large volume of

Q10: How big is the Sun's core and

Q12: The process of absorption, emission, and convection

Q13: Describe sunspots.

Q14: _ are comparatively cool, dark regions on

Q15: The _ brightness of a star decreases

Q16: What do astrophysicists call the poorly understood