Results 21 to 30 of about 242,669 (295)
The Polyfurcation Century: Does the Evolution on Earth Have a Cosmological Relevance?
Journal of Big History, 2018 Special cross-disciplinary research and respective calculations done independently by scientists from various countries have shown that the 21st century is expected to be crucial for the human history.
Akop P. Nazaretyan
doaj +1 more source
Evolution of the Early Solar System in Terms of Big History and Universal Evolution
Journal of Big History, 2018 The present contribution is devoted to some aspects of history and evolution of the early Solar system. The origin of the Sun, Earth, other planets and its satellites has long been a matter of great concern for people.
Leonid Grinin
doaj +1 more source
Considering light-matter interactions in Friedmann equations based on the conformal FLRW metric
Journal of Advanced Research, 2023 Introduction: Recent observations indicate that the Universe is not transparent but partially opaque due to absorption of light by ambient cosmic dust. This implies that the current cosmological model valid for the transparent universe must be modified ...
Václav Vavryčuk
doaj +1 more source
Journal of Big History, 2019 The idea that our Universe emerged as a result of the extraordinary power of the Big Bang from singularity (i.e., a state of an infinitely small quantity and infinitely high concentration of matter) is still very popular today.
Leonid Grinin
doaj +1 more source
Cosmic Strings in an Open Universe: Quantitative Evolution and Observational Consequences [PDF]
, 1997 The cosmic string scenario in an open universe is developed -- including the equations of motion, a model of network evolution, the large angular scale CMB temperature anisotropy, and the power spectrum of density fluctuations produced by cosmic strings ...
Avelino, P. P. +2 more
core +2 more sources
Evolution: Education and Outreach, 2010 Just as biological evolution is the heart of modern biology, cosmic evolution is the heart of modern cosmology. For instructors to be confident in teaching science, it is helpful for them to appreciate the current understanding of the composition and development of the universe, especially the revolutionary changes that have taken place in our ...
openaire +1 more source
Cosmic dust evolution: The challenges for NIKA2 [PDF]
EPJ Web of Conferences, 2022 I summarize a recent study aimed at constraining dust evolution timescales in nearby galaxies. We were able to quantify the effciency of dust condensation in SN II ejecta, grain growth in the ISM and dust destruction by SN II blast waves.
Galliano Frédéric
doaj +1 more source
Energy Flows in Low-Entropy Complex Systems
Entropy, 2015 Nature’s many complex systems—physical, biological, and cultural—are islands of low-entropy order within increasingly disordered seas of surrounding, high-entropy chaos.
Eric J. Chaisson
doaj +1 more source
The horizon of the McVittie black hole: on the role of the cosmic fluid modeling
European Physical Journal C: Particles and Fields, 2020 In this paper, we investigate the existence and time evolution of the cosmological and event horizons in a McVittie universe whose expansion is driven by the Redlich–Kwong, (Modified) Berthelot, Dieterici, and Peng–Robinson fluids, respectively.
Daniele Gregoris, Yen Chin Ong, Bin Wang
doaj +1 more source
The Astrophysical Journal, 2023 We propose a model of the Universe (dubbed η CDM) featuring a controlled stochastic evolution of the cosmological quantities that is meant to render the effects of small deviations from homogeneity/isotropy on scales of 30–50 h ^−1 Mpc at late cosmic ...
Andrea Lapi +6 more
doaj +1 more source