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Morasain t1_ixlh908 wrote

Reply to comment by runningray in Farthest galaxy candidate yet known discovered by James Webb Space Telescope by nikan69

How do we know how complex they are? Even on the JWST these galaxies are tiny

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lksdjsdk t1_ixmsvqa wrote

My guess is from spectral analysis. Even from a tiny dot at huge redshift, they'd be able to tell if there is more than just hydrogen and helium.

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