The sun and stars
de Paul Ryan
"This video looks deep into space to learn how stars are born and how, eventually, they die. Each stage is covered. Special attention is given to the Sun--its effect on the Earth, its projected lifespan, and its various levels, from corona to core, and their characteristics--as well as to spectrographic analysis of starlight and star classification with the Hertzsprung-Russell diagram."--Container.
Materias
Ediciones (1)
- The sun and stars (2006)
Cambridge Educational · inglés
