Search results
5 days ago · Summary: Filling the universe with knots shortly after it popped into existence 13.8 billion years ago provides a neat explanation for why we inhabit a three-dimensional world. That is the basic ...
1 day ago · The expansion of the universe is the increase in distance between gravitationally unbound parts of the observable universe with time. [1] It is an intrinsic expansion, so it does not mean that the universe expands "into" anything or that space exists "outside" it. To any observer in the universe, it appears that all but the nearest galaxies ...
2 days ago · Astronomy portal. v. t. e. The Lambda-CDM, Lambda cold dark matter, or ΛCDM model is a mathematical model of the Big Bang theory with three major components: a cosmological constant, denoted by lambda (Λ), associated with dark energy. the postulated cold dark matter, denoted by CDM. ordinary matter. It is referred to as the standard model of ...
5 days ago · Ptolemaic system, mathematical model of the universe formulated by the Alexandrian astronomer and mathematician Ptolemy about 150 CE and recorded by him in his Almagest and Planetary Hypotheses. The Ptolemaic system is a geocentric cosmology; that is, it starts by assuming that Earth is stationary and at the centre of the universe.
2 days ago · That the observed abundances in the universe are generally consistent with these abundance numbers is considered strong evidence for the Big Bang theory. In this field, for historical reasons it is customary to quote the helium-4 fraction by mass , symbol Y, so that 25% helium-4 means that helium-4 atoms account for 25% of the mass , but less than 8% of the nuclei would be helium-4 nuclei.
3 days ago · Using the precise data supplied by the Planck space mission, and given the fact that the universe is homogeneous and isotropic, a value of 67.4 is obtained for H0 using Einstein's theory of ...
People also ask
What is the Big Bang cosmological model?
What is a conceptual model of the expansion of the universe?
What cosmological time is 700 million years after the Big Bang?
How did the universe expand after the Big Bang?
3 days ago · Expert in astroparticle physics and theories of the early Universe, I have been working as a researcher for 9 years, searching for the nature of dark matter and exploring original models that ...
