A clear look at why dark matter remains undetected, how scientists infer its presence, and what current experiments are trying to reveal.

A clear look at whether dark energy is constant or evolving, and why that question matters for the fate of the universe.

Dark matter does not emit light, but its gravity can still bend it. Learn how gravitational lensing reveals invisible mass across the universe.

Learn how NASA’s Roman Space Telescope will probe dark energy with wide-field imaging, weak lensing, supernovae, and baryon acoustic oscillations.

Axions are hypothetical particles that may explain dark matter and a major symmetry puzzle in particle physics.

Learn why dark matter cannot be seen directly, how scientists detect it indirectly, and what its invisibility reveals about the universe.

Explore how dark energy drives cosmic expansion, shapes the fate of the universe, and challenges modern cosmology.

Neutron stars are tiny, dense, and distant, making them some of the hardest objects in astrophysics to study.