I kind of feel that light is older than stars. But is there any scientific theory or hypothesis on it?


closed as off-topic by GdD, Organic Marble, Uwe, Nathan Tuggy, Phiteros Dec 19 '17 at 18:48

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    $\begingroup$ According to theory as I understand it stars took some time to form, while light is a form of energy which was in abundance. So, light came before stars, however you'll get a better answer in physics or astronomy SE. $\endgroup$ – GdD Dec 19 '17 at 16:25
  • $\begingroup$ What do you mean by 'older'? $\endgroup$ – AtmosphericPrisonEscape Dec 19 '17 at 16:26
  • $\begingroup$ @AtmosphericPrisonEscape, I meant which came first. $\endgroup$ – opu 웃 Dec 19 '17 at 16:34
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    $\begingroup$ Light emitted by stars can't be older than the stars itself. But the cosmic microwave background radiation was once light after the bing bang. This light may have existed before the first stars. $\endgroup$ – Uwe Dec 19 '17 at 18:47
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    $\begingroup$ @Uwe is right. Certainly light existed first. As soon as there were particles with charge, their interaction started producing photons of a continuum of wavelengths. The CMB is (roughly speaking) the doppler-shifted echo of that. $\endgroup$ – uhoh Dec 24 '17 at 7:00

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