What is a Star?

  • Exhibition Text

    • An ordinary star is a massive sphere of luminous gas, mainly hydrogen and helium. A star’s heat and light derive from nuclear fusion in its core. During most of its life, a star is balanced between the inward pressure of its gravity and the outward pressure of its internal heat.

      Show more
  • For Educators

    • Topic: Astronomy

      Subtopic: Stars

      Keywords: Astrophysics, Stars, Gravity, Hydrogen, Nuclear fusion, Helium, Stars--Temperature

      Audience: General