All that carbon and oxygen — byproducts of the helium fusion process — build up in its core. At that point the star will shed its outer layers and the core will form a White Dwarf.
所有氦聚变中的附产物碳和氧在它的核心逐渐积聚，这期间它将失掉较外层物质，核心最终枯萎成为白矮星。
Red giants are hot enough to turn the helium at their core, which was made by fusing hydrogen, into heavy elements like carbon.
红巨星的温度足够高，可以将其核心中由氢聚变成的氦再转变为重元素，比如碳。
Under such extreme conditions, which are found only in the core of stars, the hydrogen atoms will fuse, producing helium and vast amounts of energy.
在这种原本只能发生在恒星内部的极端条件下，氢原子将发生聚变反应而生成氦原子，同时释放出大量能量。
Did the star ignite helium at the core, swallow a planet, or swallow a companion star?
星体燃烧了核内的氦，吞并了行星或伴星吗？
Dr Marcy suspects that his new discovery, which has about 45 times the mass of the Earth, is composed of a rocky core surrounded by a thick envelope of hydrogen and helium gas.
马西博士怀疑，他的这个拥有地球质量四十五倍的新发现星体有一个岩层核心构成，并被一层很厚实的氢气与氦气层笼罩。
This occurs hundreds of billions of times every second in the core of stars like our sun, as hydrogen is converted into heavier elements like helium, releasing huge amounts of energy in the process.
在像太阳这样的恒心的内核里，这个过程每秒会发生上千亿次。在反应过程中氢原子转变成氦原子之类的更重的元素，并释放出巨大的能量。
Nuclear reactions in such a star's core, the source of power for nearly its entire life, deplete the available hydrogen, then the helium.
恒星一生的能量来源，几乎都来自中心的核反应，过程中会耗尽所有可用的氢，然后是氦。
Nuclear reactions in such a star's core, the source of power for nearly its entire life, deplete the available hydrogen, then the helium.
恒星一生的能量来源，几乎都来自中心的核反应，过程中会耗尽所有可用的氢，然后是氦。
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