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AsteriaStar
Learning path

Learn Astronomy

A guided journey from looking up to understanding the universe.

In pictures

Beginner
  1. 1.1Beginner AstronomyStart here — the essentials of looking up.
  2. 1.2What is a star?The most fundamental object in the sky.
  3. 1.3Explore the Solar SystemThe Sun, planets, and dwarf planets.
Intermediate
  1. 2.1How stars formFrom cold gas clouds to shining stars.
  2. 2.2Explore galaxiesIsland universes of stars and gas.
  3. 2.3Light-years & distanceHow we measure the cosmos.
Advanced
  1. 3.1How black holes workGravity, event horizons, and what falls in.
  2. 3.2Explore deep skyGalaxies, nebulae, clusters, and black holes.
  3. 3.3Advanced astronomyDeeper concepts and methods.

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