Super soft organic cotton women's t-shirt featuring an experimental map of the cosmic microwave background.<\/p>
The cosmic microwave background (CMB) is the faint glow of radiation that permeates the universe and is a remnant of the Big Bang. It consists of low-energy photons that were released about 380 000 years after the initial explosion, when the universe cooled enough for electrons and protons to combine and form neutral atoms. Before this period the universe was too hot and dense for light to travel freely.<\/p>
The CMB provides a snapshot of the universe's early conditions and reveals slight temperature variations or anisotropies. These variations are essential in understanding the structure and evolution of the cosmos. Precise measurements of the CMB have played a crucial role in confirming key aspects of the Big Bang theory and our understanding of the universe's age\/composition\/large-scale structure. Experiments like the Wilkinson Microwave Anisotropy Probe (WMAP) pictured here provided detailed maps of the CMB. These have contributed significantly to our understanding of the early universe.<\/p>
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I. J. O'Dwyer et\u00a0al. Astro. J. Lett. 617 (2) 2004<\/p>
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