Khan Academy Static

Stars begin when material drifting in space condenses due to gravity to be dense enough for fusion to occur. Depending on the volume and make-up of this material, the star could then develop into very different things--from supernovae, to neutron stars, to black holes. This tutorial explores the life of stars and will have you appreciating the grand weirdness of our reality.

10656_Supermassive_black_holes.html

10652_Lifecycle_of_massive_stars.html

10651_Star_field_and_nebula_images.html

10654_Supernova_clarification.html

10655_Black_holes.html

10648_Accreting_mass_due_to_gravity_simulation.html

10653_Supernova_supernovae_.html

10650_White_and_black_dwarfs.html

10647_Birth_of_stars.html

10649_Becoming_a_red_giant.html