"a4heareng" - 1 õppematerjal

28-leheline referaat: Tähed ja nende teke

ning nad on ülimalt kuumad. 13 Viited http://thevictoryreport.org/tag/300-times-the-size-of-our-sun-discovered/ (pilt 1) http://en.wikipedia.org/wiki/Yellow_hypergiant (jutt) http://et.wikipedia.org/wiki/T%C3%A4ht_(astronoomia) (jutt) http://en.wikipedia.org/wiki/Star (jutt) http://en.wikipedia.org/wiki/Category:Stars_by_luminosity_class (jutt) http://et.wikipedia.org/wiki/Protot%C3%A4ht (jutt) http://et.wikipedia.org/wiki/T%C3%A4heareng (jutt) http://en.wikipedia.org/wiki/Red_giant (pilt 2) http://www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml (jutt) http://www.universetoday.com/24299/types-of-stars/ (jutt) http://et.wikipedia.org/wiki/P%C3%A4ike (pilt 3) http://www.space.com/58-the-sun-formation-facts-and-characteristics.html (jutt) http://en.wikipedia.org/wiki/Sun (pilt 4) 14