Stars | Young Education

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S

Spectral Class

A system used to classify stars according to their temperature and colour. A classification system (O, B, A, F, G, K, M) based on a star's temperature and colour.

Star

A massive sphere of hot gas that produces energy through nuclear fusion.

Stellar Nucleosynthesis

The formation of new chemical elements through nuclear fusion inside stars.

Stellar Remnant

The object left behind after a star reaches the end of its life.

Strong Nuclear Force

The force that binds protons and neutrons together inside atomic nuclei.

Supergiant

An extremely large and highly luminous star.

Supernova

A powerful explosion marking the death of a massive star.

Surface Temperature

The temperature of a star's outer layer, which determines its colour.