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what does the cosmic microwave background represent quizlet

The CMB is faint cosmic background radiation filling all space.

The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began.

1.
Based on evidence from measurements of the acceleration of the expansion rate and from careful study of the cosmic microwave background, about what percentage of the universe's total mass and energy takes the form of ordinary atomic matter (protons, neutrons, and electrons)?
Because the expanding universe has cooled since this primordial explosion, the background radiation is in the microwave region … Cosmic microwave background (CMB), electromagnetic radiation filling the universe that is a residual effect of the big bang 13.8 billion years ago. The CMB is, in effect, the leftover heat of the Big Bang itself - it was released when the universe became cool enough to become transparent to light and … 5%.

In view of the importance of cosmic microwave background radiation to the Big Bang model of the universe (no other model has explained CMB quite so neatly), efforts were redoubled in an attempt to definitively prove the connection, first in the form of the Cosmic Background Explorer (COBE) satellite in 1989, and then the Wilkinson Microwave Anisotropy Probe (WMAP) in 2001. The cosmic microwave background (CMB) temperature fluctuations from the 7-year Wilkinson Microwave Anisotropy Probe data seen over the full sky. Dictionary entry overview: What does cosmic microwave background radiation mean? (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin

The data points on this graph represent the measured spectrum of the cosmic microwave background, whereas the solid curve represents a theoretically calculated thermal radiation spectrum for a temperature of 2.73 K. What is the significance of the near-perfect match between the data and the theoretical spectrum? The cosmic microwave background (CMB, CMBR), in Big Bang cosmology, is electromagnetic radiation as a remnant from an early stage of the universe, also known as "relic radiation". • COSMIC MICROWAVE BACKGROUND RADIATION (noun) The noun COSMIC MICROWAVE BACKGROUND RADIATION has 1 sense:.

The cosmic microwave background (CMB) is an almost-uniform background of radio waves that fill the universe.