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Cosmology

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

Explore by Cosmology

Conceptual visualization of a glowing scalar field in the early universe hot plasma

June 9, 2026

Axion Early Dark Energy and the Hubble Tension: Pre-Recombination Solutions

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Conceptual illustration of primordial magnetic fields causing baryon clumping in the early cosmic plasma, a mechanism proposed to solve the Hubble tension.

June 7, 2026

Primordial Magnetic Fields and the Hubble Tension: A 5–10 Picogauss Relic in the CMB

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Cosmic microwave background map with twisted polarization vectors illustrating cosmic birefringence.

June 4, 2026

Cosmic Birefringence: Is the CMB Revealing New Parity-Violating Physics?

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Conceptual representation of the two-field quintom dark energy crossing the phantom divide.

June 3, 2026

Quintom Dark Energy: The Two-Field Lagrangian Crossing the Phantom Divide After DESI DR2

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A visualization of the cosmic microwave background showing strong temperature variance in one hemisphere compared to the other, representing the lopsided universe.

June 1, 2026

Is the Universe Lopsided? Planck PR4 Confirms CMB Asymmetry

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The South Pole Telescope operating in Antarctica, mapping the cosmic microwave background under a starry sky.

May 30, 2026

SPT-3G 2025 Results Confirm the Hubble Tension: Deepest CMB Power Spectra

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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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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.