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Conformal cyclic cosmology (CCC) is a cosmological model in the framework of general relativity and proposed by theoretical physicist Roger Penrose. [1] [2] [3] In CCC, the universe iterates through infinite cycles, with the future timelike infinity (i.e. the latest end of any possible timescale evaluated for any point in space) of each previous iteration being identified with the Big Bang ...
CMB spectral distortions are tiny departures of the average cosmic microwave background (CMB) frequency spectrum from the predictions given by a perfect black body.They can be produced by a number of standard and non-standard processes occurring at the early stages of cosmic history, and therefore allow us to probe the standard picture of cosmology.
Without the expansion of the universe to cause the cooling of the CMB, the night sky would shine as brightly as the Sun. [13] The energy density of the CMB is 0.260 eV/cm 3 (4.17 × 10 −14 J/m 3), about 411 photons/cm 3.
Katherine J. Mack (born 1 May 1981) [3] is a theoretical cosmologist who holds the Hawking Chair in Cosmology and Science Communication at the Perimeter Institute.Her academic research investigates dark matter, vacuum decay, and the Epoch of Reionization.
PREMIERE Sky will premiere its upcoming Sky Original documentary “Hawking: Can You Hear Me?”, described as the human story behind one of the 20th century’s best known scientific minds ...
Temperature of the cosmic background radiation spectrum based on COBE data: uncorrected (top); corrected for the dipole term due to our peculiar velocity (middle); corrected additionally for contributions from our galaxy (bottom).
Hawking spoke with WIRED on a wide range of topics in a new interview, directly addressing Trump's stance on climate change -- arguably unsurprising given his well known concerns over our planets ...
The discovery of cosmic microwave background radiation constitutes a major development in modern physical cosmology.In 1964, US physicist Arno Allan Penzias and radio-astronomer Robert Woodrow Wilson discovered the cosmic microwave background (CMB), estimating its temperature as 3.5 K, as they experimented with the Holmdel Horn Antenna.