Astronomy Glossary

Cosmology Universe

The ΛCDM model (Lambda Cold Dark Matter) is the standard cosmological model describing Universe's large-scale structure and evolution.

Astronomy Concepts

A light curve is a graph of brightness vs time, revealing periodic variations, eclipses, transits, and explosive events.

Telescopes Equipment

Light pollution filters selectively block wavelengths from artificial lighting (sodium, mercury vapor) while passing starlight, improving contrast in ...

Units Distance

The distance light travels in one year.

Astronomy Concepts

Luminosity is the total energy radiated by an object per unit time (intrinsic brightness), measured in watts or solar luminosities (L☉ = 3.828 × 10²⁶ ...