#stellar-evolution

3 articles

The Hertzsprung–Russell Diagram: Mapping the Stars

The Hertzsprung–Russell diagram plots stellar luminosity against surface temperature, revealing the main sequence, giants, and white dwarfs — and the tracks stars trace as they evolve.

10 min read·Jul 26, 2026

Astronomy & Cosmology

Where the Elements Come From

The calcium in your bones and the iron in your blood were built by nuclear fusion in stellar cores — a ladder that climbs to iron and then can climb no further.

10 min read·Jul 8, 2026

Astronomy & Cosmology

The Life Cycle of Stars

How a collapsing cloud of gas becomes a star, why its mass decides everything — including the surprising fact that the biggest stars die youngest — and how it ends.

10 min read·Jul 5, 2026