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Cosmology

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

Explore by Cosmology

Visual representation of a 3-torus manifold wrapped in CMB temperature fluctuations.

May 29, 2026

Is the Universe a 3-Torus? Cosmic Topology and the Laplace–Beltrami Resolution of the CMB Low-Quadrupole Anomaly

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Conceptual visualization of the Hubble tension comparing early and late universe expansion data

May 28, 2026

Hubble Tension Solutions Showdown 2026: Ranking Cosmological Models

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Abstract representation of the cosmic microwave background overlaid with field theory equations and tensor geometries

May 27, 2026

ACT DR6 vs. Starobinsky R² Inflation: Diagnosing the Horizon-Scale Tension

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Visualization of the cosmic microwave background serving as a backlight to illuminate diffuse filaments of intergalactic hydrogen gas.

May 25, 2026

Missing Baryons Found: How the kSZ Effect Turned the CMB Into a Cosmic Backlight

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Cosmological visualization of dark matter gravitational lensing and baryon acoustic oscillations.

May 24, 2026

Negative Neutrino Mass at 3σ: Resolving the DESI & ACT Lensing Anomaly

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3D render of polarized light waves rotating through a starry cosmos, illustrating cosmic birefringence

May 23, 2026

Cosmic Birefringence: The Chern-Simons Lagrangian Behind CMB Parity Violation

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Cosmic microwave background map with overlaid theoretical physics geometry

May 21, 2026

Primordial Non-Gaussianity and the Maldacena Consistency Relation: An EFT-of-Inflation Test

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Conceptual illustration of the CMB Axis of Evil showing aligned quadrupole and octopole modes across the celestial sphere.

May 21, 2026

The Axis of Evil: Inside the CMB Quadrupole-Octopole Alignment

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The 10-meter South Pole Telescope against a starry sky during the austral winter.

May 20, 2026

SPT-3G D1 Confirms 6.2σ Hubble Tension: A High-Resolution CMB Power Spectrum Analysis

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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.