20 September 2017
The Cold Atom Clock Experiment in Space (CACES) involves trapping, cooling, and probing rubidium atoms within a box that could fit in the trunk of a car. In orbit at an altitude of 400 kilometers, the experiment was launched on board China’s Tiangong-2 space laboratory last September. Now, a year later, it is performing just as expected, according to a paper posted to the arXiv server by scientists at the Chinese Academy of Sciences’s Shanghai Institute of Optics and Fine Mechanics.
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