A cosmic controversy.
A cosmic controversy.
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一场宇宙性的争论。
作者：
J. You;Chris Bickel;J. Sokol
关于哈勃常数，宇宙膨胀率的争论再次爆发。天文学家们大多使用一种经典的技术“距离阶梯”，或者说从本地宇宙向外的天文观测来确定一个数字。但是这些值与根据早期宇宙地图所做的宇宙学估计相冲突，并调整到今天。这场争论表明，一种缺失的成分可能正在推动宇宙的增长。
Debate over the Hubble constant, the expansion rate of the universe, has exploded again. Astronomers had mostly settled on a number using a classical technique—the "distance ladder," or astronomical observations from the local universe on out. But these values conflict with cosmological estimates made from maps of the early universe and adjusted to the present day. The dispute suggests a missing ingredient may be fueling the growth of the universe.