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Describe the Sun's structure and features.
描述太阳的结构和特征。
How does the Sun produce energy?
太阳是如何产生能量的？
What are sunspots?
太阳黑子是什么？
Describe the Sun's path on the celestial sphere.
描述太阳在天球上的路径
What coordinates are used to describe a star's position?
用来描述恒星位置的坐标是什么？
How are distances to stars measured?
如何测量恒星的距离？
How is the magnitude of a star measured?
如何测量恒星的亮度？
What is the H-R Diagram?
赫鲁图-罗素图是什么？
Describe the life cycle of a star like our Sun.
描述像我们的太阳这样的恒星的生命周期
How do the life cycles of more massive stars differ?
更高质量的恒星生命周期有何不同？
What leads to a supernova?
什么导致超新星？
How do the conditions for creating a white dwarf, a neutron star and a black hole differ?
如何形成白矮星、中子星和黑洞的条件不同？
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