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Stars that become Cepheid variables stay in this phase of their lives for only a short period of time, and after they leave the main sequence. While their properties vary (in particular, Cepheids a...
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#1: Attribution notice removed
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System
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2020-06-01T14:13:58Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/151644 License name: CC BY-SA 4.0 License URL: https://creativecommons.org/licenses/by-sa/4.0/