Cosmology is a research area in astrophysics that investigates the large-scale properties, origin, composition, and dynamical evolution of the Universe as a whole. It integrates general relativity, quantum field theory, and observational astronomy to construct and test models such as the ΛCDM paradigm, characterized by dark energy, cold dark matter, and baryonic matter. Cosmology addresses the expansion history, cosmic microwave background anisotropies, structure formation, and primordial nucleosynthesis, using data from galaxy surveys, gravitational lensing, supernovae, and cosmic background experiments to constrain fundamental parameters and probe physics at energy scales inaccessible to terrestrial laboratories.
Astronomers want to unlock the secrets of the "Cosmic Dawn" by sending a miniature spacecraft to listen out for an "ancient whisper" on the far side of the moon.
Astronomy
Jul 8, 2025
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Scientists may have found a new way to detect some of the universe's most mysterious objects, primordial black holes (PBHs), using Hawking radiation. This groundbreaking approach relies upon watching for their radiation signatures ...
Astronomy
Jun 27, 2025
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Astronomers have uncovered a vast cloud of energetic particles—a "mini halo"—surrounding one of the most distant galaxy clusters ever observed, marking a major step forward in understanding the hidden forces that shape the ...
Astronomy
Jun 26, 2025
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A USC-led research team has created a series of supercomputer-simulated twins of our Milky Way galaxy—which could help scientists unlock new answers about one of the biggest mysteries in the universe: dark matter, the invisible ...
Astronomy
Jun 16, 2025
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A new landmark study has pinpointed the location of the universe's "missing" matter, and detected the most distant fast radio burst (FRB) on record. Using FRBs as a guide, astronomers at the Center for Astrophysics | Harvard ...
Astronomy
Jun 16, 2025
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Scientists have created a computer simulation that mimics what the Square Kilometer Array Low-frequency (SKA-Low) telescope will see when it searches for signals from the universe's earliest epochs. This simulation represents ...
Astronomy
Jun 13, 2025
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Combining the way that massive galaxies and galaxy clusters bend space and magnify our view of the distant universe with powerful new instruments sensitive to gravitational waves and electromagnetic radiation will lead to ...
Astronomy
Jun 12, 2025
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About a century ago, scientists were struggling to reconcile what seemed like a contradiction in Albert Einstein's theory of general relativity.
Astronomy
Jun 10, 2025
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String theory has long been touted as physicists' best candidate for describing the fundamental nature of the universe, with elementary particles and forces described as vibrations of tiny threads of energy. But in the early ...
General Physics
Jun 9, 2025
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In the name of open science, the multinational scientific collaboration COSMOS on Thursday released the data behind the largest map of the universe. Called the COSMOS-Web field, the project, built with data collected by the ...
Astronomy
Jun 5, 2025
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