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What Is an Atomic Clock? (2019)
The clock is ticking: A technology demonstration that could transform the way humans explore space is nearing its target launch date of June 24, 2019.
The clock is ticking: A technology demonstration that could transform the way humans explore space is nearing its target launch date of June 24, 2019. In fact, the official measurement of the length of a second is determined by the frequency needed to make electrons jump between two specific energy levels in a cesium atom. Those updates come from more stable atomic clocks on the ground that are large (often the size of a refrigerator) and not designed to survive the physical demands of going to space.
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