Star Classification - Zoom Astronomy
Star Classification ( Read ) | Earth Science | CK-12. Why are stars different colors? Related to their size. Nice article with visuals explaining why.
The Sun is designated as a "G2V" star. What does that mean? More physics and astronomy at http://www.sixtysymbols.com/
star trek ships | Engineering 102A: Starship Recognition Protocols » Star Trek Minutiae
Federation Starship Fleet Chart - Front Elevation
Christmas Science Advent: Christmas Star Classification
Deneb is one of the most distant stars you will see with your eye alone. That’s because it’s one of the most luminous stars in the Milky Way galaxy. -infograph
Awesome science powerpoint for middle school astronomy. Includes: absolute vs apparent magnitude, HR diagram, data collection etc.