The only feasible explanation was that a constant of physics called the fine structure constant, or alpha, had a different value near the time the light started its journey.
唯一可能且合理的解释是：一个被称之为“精细结构常数”或α的物理常数，在临近启程的那段时间产生了一个不同的值。
And the fine-structure constant will have shown itself to be more mysterious than even Feynman conceived.
此外，精细结构常数将表现得比费曼想象的更奇幻得多。
This frequency depends on the fine-structure constant.
该频率取决于精细结构常数。
Astrophysicists have been studying the fine-structure constant? Known as the alpha constant? For years, searching for hints that it might change.
天体物理学家多年来一直都在研究精细结构常数——称为alpha常数——寻找它可能发生变化的蛛丝马迹。
Astrophysicists have been studying the fine-structure constant - known as the alpha constant - for years, searching for hints that it might change.
天体物理学家多年来一直都在研究精细结构常数——称为alpha常数——寻找它可能发生变化的蛛丝马迹。
For more than 20 years, some researchers have found what they think is evidence that the fine-structure constant varies over time.
20多年以来，一些研究学者一直致力于寻找精细结构常数是变化着的的证据。
The researchers found that in the northern sky, the fine-structure constant gets smaller with increasing distance, or as astronomers look farther back in time.
研究人员发现在北方天穹，精细结构常数在越远的地方就越小，或者说天文学家所看到的过去越久远。
Slightly belying its name, the fine-structure constant is actually a compound of several other physical constants, whose values can found in any physics textbook.
精细结构常数实际上是其他几个能在任何物理学教科书中找到数值的物理常数合成，同它的名称稍微有些名不副实。
Fundamental constants such as the strength of the electromagnetic force - the so-called fine-structure constant, or alpha - get their name from the fact that they are supposedly the same everywhere.
宇宙基本常数，比如电磁力强度之类的精细结构常数，符号位“alpha ”，它们因为被假定为不变量而得名。
Fundamental constants such as the strength of the electromagnetic force - the so-called fine-structure constant, or alpha - get their name from the fact that they are supposedly the same everywhere.
宇宙基本常数，比如电磁力强度之类的精细结构常数，符号位“alpha ”，它们因为被假定为不变量而得名。
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