Significance UDFy-38135539

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hubble looking past.


the period of universal star birth reionization epoch. universe s first stars massive, ionizing hydrogen in surrounding environment (trenti).


udfy-38135539 (hudf.yd3) thought 1 of first galaxies observed in reionization epoch. caltech astronomer brant robertson, commenting on study, stated galaxy happens reside @ special time in cosmic history when properties of gas in universe changing rapidly, , therefore galaxy , others may teach lot history of universe . michele trenti, astronomer not involved in study provided commentary published report, says discovery of distant galaxy represents a









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