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Procyon B
surface temperature (Kelvin)
Polaris
decreasing
temperature
Vega
It is fusing hydrogen at its core.
It has lost its outer shell and retained only a hot core that is slowly losing its brightness.
Its temperature has decreased, but it is shining brighter than before.
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Procyon B Surface Temperature Kelvin Polaris Decreasing Temperature Vega It Is Fusing Hydrogen At Its Core It Has Lost Its Outer Shell And Retained Only A Hot C class=

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