reionize
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Reionization — in the universe. The universe is currently ionized, in this sense.The first phase change was , which occurred at a redshift z = 1100 (400,000 years after the Big Bang), due to the cooling of the universe to the point where the rate of combination … Wikipedia
Wilkinson Microwave Anisotropy Probe — WMAP redirects here. WMAP may also refer to either radio station WXNC or WGSP FM. Wilkinson Microwave Anisotropy Probe General information NSSDC ID 2001 027A … Wikipedia
Gunn-Peterson trough — In astronomical spectroscopy, the Gunn Peterson trough is a feature of the spectra of quasars due to the presence of neutral hydrogen in the Intergalactic Medium (IGM). The trough is characterized by suppression of electromagnetic emission from… … Wikipedia
