lunes, 14 de julio de 2008

The classification of stars


Stars:The stars have different colors.Astronomers can tell the difference among the stars depending on the stars heat.The hotter stars will burn baster and this causes theu life to be shorter.The bleu stars are the hottest and they a abont 20,000c·.
The white stars are about 10,000c·.
The yellow stars like the sun are about 6,000c·
The orage and red stars are the coolest stars.they are about 3,000c· and 4,500c·.

                                             The life of a stars
 The life of a star starts in a cloud of gas and dust called the nebulosa.Ther are stars un our universe of different ages since ther are stars bein born at all tunes and otherones duing.Our stars,the sun is about 5,000millions years old. It is the midalle of its life cucle.













No hay comentarios: