Stellar composition - IES Río Órbigo
(spanish version)
20/February/201916-17 years - 25 students
What is a star made of? Follow the steps of Cecilia Payne and work out the different elements inside the stars: hydrogen, hellium, oxygen... Just look at the spectrum and find what is missing...
![](http://cesar.esa.int/upload/201902/20_02_turno2-mini.jpg)