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Cosmology

Investigating the origin, evolution, fundamental structure, and ultimate fate of the entire universe.

Explore by Cosmology

Scientific visualization of primordial magnetic fields weaving through cosmic plasma, causing baryon clumping.

June 21, 2026

Primordial Magnetic Fields and the bΛCDM Resolution of the Hubble Tension

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Artistic rendering of the cosmic web crossing the phantom divide, illustrating dynamic dark energy.

June 20, 2026

The Phantom Divide Crossed: Quintom Dark Energy and the 4.2σ Failure of ΛCDM After DESI DR2

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Artistic representation of cosmic microwave background acoustic waves and neutrino phase shifts in the early universe.

June 19, 2026

The Neutrino Acoustic Phase Shift: ACT DR6 Constraints on Light Relics

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Conceptual visualization of cosmic birefringence rotating the polarization vectors of the cosmic microwave background.

June 18, 2026

Cosmic Birefringence and CMB Parity Violation: The Chern–Simons Rotation After ACT DR6

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Visualization of spherical sound waves expanding in the primordial cosmic plasma representing CMB acoustic peaks

June 17, 2026

The Hubble Tension After SPT-3G: A 6.2σ Clash in Cosmology

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Conceptual visualization of a lopsided universe with an offset cosmic web and directional cosmic tilt

June 16, 2026

Is the Universe Lopsided? The Cosmic Dipole Anomaly and the 5σ Failure

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Conceptual illustration comparing constant vacuum energy and dynamically evolving scalar fields in cosmology.

June 15, 2026

Is Dark Energy Constant or Evolving? ΛCDM vs. w₀wₐCDM After DESI DR2

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Abstract scientific visualization of a 3-torus cosmic topology with intersecting spheres of the cosmic microwave background.

June 14, 2026

Cosmic Topology and the 3-Torus: Signatures of a Finite Universe

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Abstract 3D visualization of an inflationary plateau potential grid against a cosmic microwave background.

June 12, 2026

Starobinsky Inflation and the ACT DR6 Spectral-Index Shift: Are Plateau Models Ruled Out?

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FAQs about Cosmology

Cosmology is the scientific study of the entire universe. It asks questions about how the universe began, how it has evolved, and what its ultimate fate will be.

The Big Bang Theory is our best explanation for how the universe started. It states that the universe began as an extremely hot, dense point about 13.8 billion years ago and has been expanding and cooling ever since.

These are the two biggest mysteries in cosmology. Dark matter is an invisible substance that provides extra gravity to hold galaxies together. Dark energy is a mysterious force that is causing the expansion of the universe to accelerate.

Because light takes time to travel, looking at distant galaxies is like looking back in time. Telescopes like Hubble and James Webb allow us to see galaxies as they were billions of years ago, giving us clues about the early universe.