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1980 – Gravity Probe A verifies gravitational redshift to approximately 0.007% using a space-born hydrogen maser. [209] 1980 – James Bardeen explains structure in the Universe using cosmological perturbation theory. [210] 1981 – Alan Guth proposes cosmic inflation in order to solve the flatness and horizon problems. [211]
Unlike gravity, the effects of such a field do not diminish (or only diminish slowly) as the universe grows. While matter and gravity have a greater effect initially, their effect quickly diminishes as the universe continues to expand. Objects in the universe, which are initially seen to be moving apart as the universe expands, continue to move ...
A star is a massive luminous spheroid astronomical object made of plasma that is held together by its own gravity.Stars exhibit great diversity in their properties (such as mass, volume, velocity, stage in stellar evolution, and distance from Earth) and some of the outliers are so disproportionate in comparison with the general population that they are considered extreme.
GRB 080916C is a gamma-ray burst (GRB) that was recorded on September 16, 2008, in the Carina constellation and detected by NASA's Fermi Gamma-ray Space Telescope. The burst lasted for 23 minutes (1400 s).
This is a timeline of space exploration which includes notable achievements, first accomplishments and milestones in humanity's exploration of outer space. This timeline generally does not distinguish achievements by a specific country or private company, as it considers humanity as a whole.
This clickable timeline template, wikilinked to over 30 Wikipedia articles, translated into over 15 languages, edited by over 20 editors, transcluded to over 70 articles, was originally derived from {{Life timeline}} for inclusion in the article "Timeline of the formation of the Universe". It is not an article!
1998 – Discovery of accelerating universe. [13] 2000 – Data from several cosmic microwave background experiments give strong evidence that the Universe is "flat" (space is not curved, although space-time is), with important implications for the formation of large-scale structure.
The styling and format of the template is meant to replicate the version that appeared on Marvel Cinematic Universe timeline#Timeline (as seen here) and the various Phase articles (as seen on Marvel Cinematic Universe: Phase Four#Timeline here) before the templates were created in February 2025.