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Dark energy, believed to comprise approximately 69% of the universe, is a hypothesized form of energy permeating vast swathes of space that counteracts gravity and drives the universe's ...
That might mean there are unknown forces at work in the universe, for instance, or that there is a gap in our understanding of the cosmos that could require new physics.
A father-daughter duo has decoded an alien-like signal beamed from a spacecraft in 2023. Now, citizen scientists are trying to interpret the cosmic puzzle.
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 December 2024. Predicted dates of the end of the world This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources. The Last Judgment by painter Hans Memling. In Christian belief, the Last Judgement is an ...
The observable universe is isotropic on scales significantly larger than superclusters, meaning that the statistical properties of the universe are the same in all directions as observed from Earth. The universe is bathed in highly isotropic microwave radiation that corresponds to a thermal equilibrium blackbody spectrum of roughly 2.72548 ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 December 2024. Scientific projections regarding the far future Several terms redirect here. For other uses, see List of numbers and List of years. Artist's concept of the Earth 5–7.5 billion years from now, when the Sun has become a red giant While the future cannot be predicted with certainty ...
In models where dark energy is the cosmological constant, the universe will expand exponentially with time in the far future, coming closer and closer to a de Sitter universe. This will eventually lead to all evidence for the Big Bang disappearing, as the cosmic microwave background is redshifted to lower intensities and longer wavelengths.
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