# Physicist consensus on cosmological theories > Live situation record from CLSTR: https://clstr.news/situations/physicist-consensus-on-cosmological-theories > Updated: 2026-09-18T21:27:40.000Z. Sources: 4. Developments: 2. A global survey of physicists has revealed a significant lack of consensus regarding fundamental cosmological questions. Research indicates that the standard Lambda-CDM model lacks universal acceptance as a final description of the universe. Regarding the Big Bang, approximately 68 percent of respondents believe it may not have marked the absolute beginning of time, viewing it instead as a transition from an extremely hot and dense state. Support for the theory of cosmic inflation is also divided, with only about 51 percent of participants in agreement. Opinions on dark matter and dark energy remain fragmented. Regarding dark matter, perspectives include favoring undiscovered particles, proposing modifications to the theory of gravity, or suggesting a combination of hypotheses. On the subject of dark energy, 24 percent of physicists support the cosmological constant, while 26 percent believe it is a phenomenon that varies over time. ## Timeline ### 2026-09-18: Physicists lack consensus on Big Bang and cosmic origins A survey of 1,600 physicists shows deep divisions in cosmology, with 68 percent doubting the Big Bang marks the beginning of time and only 51 percent supporting cosmic inflation. 2 sources. https://clstr.news/cluster/physicists-lack-consensus-on-big-bang-and-cosmic-origins ### 2026-09-12: Physicists face uncertainty over cosmic origins and dark matter A global survey of physicists reveals deep uncertainty regarding the Big Bang and dark matter, while Japanese researchers use Earth's atmosphere to detect potential dark matter signals. 2 sources. https://clstr.news/cluster/physicists-face-uncertainty-over-cosmic-origins-and-dark-matter --- Cite as: Physicist consensus on cosmological theories. CLSTR, https://clstr.news/situations/physicist-consensus-on-cosmological-theories