Five Ages of the Universe, the astrophysicists Fred Adams and Gregory Laughlin divided the past and future history of an expanding universe into five eras...

on expanding space". arXiv:0809.4573 [astro-ph]. Eddington, Arthur. The Expanding Universe: Astronomy's 'Great Debate', 1900–1931. Press Syndicate of the...

Ages of the Universe is a popular science book written by astrophysicists Fred Adams and Gregory P. Laughlin about the future of an expanding universe first...

Future of an expanding universe#Galaxies outside the Local Supercluster are no longer detectable. Loeb, Abraham (2002). "The Long-Term Future of Extragalactic...

that describes how the universe expanded from an initial state of high density and temperature. The notion of an expanding universe was first scientifically...

solved in such a way as to allow the universe to be expanding at the present and contracting in the far future, he added to those equations what he called...

observations of an early state of the universe, which indicate an age of 13.787±0.020 billion years as interpreted with the Lambda-CDM concordance model as of 2021;...

the constants of proportionality depend on conventions. It is common to describe a patch of this solution as an expanding universe of the FLRW form where...

Gillespie, Stuart (21 October 2016). "The universe is expanding at an accelerating rate – or is it?". University of Oxford – News & Events – Science Blog...

cosmological constant, the universe will continue expanding forever, and a heat death is expected to occur, with the universe cooling to approach equilibrium...

“big bang” as an explosion inside a black hole, producing the expanding volume of space and matter that includes the observable universe. This black hole...

of an open universe in the sense that space will continue expanding forever. A flat universe can have zero total energy. A positively curved universe...

steady state theory is an alternative to the Big Bang theory. In the steady-state model, the density of matter in the expanding universe remains unchanged...

The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the...

considered the possibility of a cyclic model for the universe as an (everlasting) alternative to the model of an expanding universe. In 1922, Alexander Friedmann...

For timelines of the future of the universe, see: Timeline of the Big Bang Future of an expanding universe Timeline of the far future This set index article...

spatially and temporally infinite, and space is neither expanding nor contracting. Such a universe does not have so-called spatial curvature; that is to...

different universes within the multiverse are called "parallel universes", "flat universes", "other universes", "alternate universes", "multiple universes", "plane...

filaments (the largest-scale structures in the universe), which contain very few or no galaxies. In spite of their size, most galaxies are not located in...

was the period in the evolution of the early universe when, according to inflation theory, the universe underwent an extremely rapid exponential expansion...

a theory of exponential expansion of space in the very early universe. Following the inflationary period, the universe continued to expand, but at a...

8 November 2018, an auction of 22 personal possessions of Hawking, including his doctoral thesis (Properties of Expanding Universes, PhD thesis, Cambridge...

to vanish completely (see Future of an expanding universe). Planet Earth, the Milky Way, and the Local Group of galaxies of which the Milky Way is a part...

theory of the Big Bang, emerged together 13.787±0.020 billion years ago, and the universe has been expanding ever since. Today the universe has expanded into...

an expanding universe, fluids with larger equations of state disappear more quickly than those with smaller equations of state. This is the origin of...

factor to reach zero, an event potentially followed by a reformation of the universe starting with another Big Bang. The vast majority of evidence indicates...

universe. In 1927, the Belgian physicist Georges Lemaitre proposed an expanding model for the universe to explain the observed redshifts of spiral...

physical cosmological model of the universe that was, or still is, proposed as an alternative to the then-current standard model of cosmology. The term non-standard...

observations of supernovae determined that not only is the universe expanding, it is expanding at an increasing rate. A better understanding of the acceleration...

of objects between a static and an expanding Universe. This is known as the Tolman surface brightness test that in those studies favors the expanding...