BC: THE END
FC: Star trip By: Sihyeon
1: contents.... -Nebula -Main-Sequence Star -Giants, Supergiants -White Dwarfs
2: Hi I'm nebula an interstellar cloud of dust, hydrogen gas, helium gas and plasma. Originally nebula was a general name for any extended astronomical object, including galaxies beyond the Milky Way.
4: Hi I'm main sequence star It enters the second and longest stage of its life cycle known as the main sequence. During this stage, energy is generated in the core of the star as hydrogen atoms fuse into helium atoms. This process releases an enormous amount of energy. The size of a main-sequence star will change very little as long as the star has a continuous supply of hydrogen atoms to fuse into helium atoms.
6: Hi I'm giants and supergiants star. In this third stage, a star can become a red giant. A red giant is a star that expands and cools once it uses all of its hydrogen. Eventually, the loss of hydrogen causes the center of the star to shrink. As the center of the shrinks, the atmosphere of the star grows very large and cools to form a red giant or a red supergiant. And I am least 100 times bigger than the sun.
8: Hi I'm in the final stages of a star's life cycle, a star that has the same mass as the sun or smaller can be classified as me. A I am a small hot star that is the leftover center of an older star. A I has no hydrogen left and can no longer generate energy by fusing hydrogen atoms into helium atoms. A I has no hydrogen left can shine for billions of years before they cool completely.
10: picture website http://www.skyofplenty.com/wp-content/uploads/2008/09/hrcolour.jpg http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod_e/image/0506/wd_cxc_full.jpg
11: http://www.istockphoto.com/file_thumbview_approve/5143638/2/istockphoto_5143638-funny-cute-star.jpg http://www.teachersparadise.com/ency/en/media/d/d6/triangulum_nebula_arp_750pix.jpg Giant and supergiant star is just take a picture in astronomy(science book).
12: Information: astronomy(science book page 41), and wikipidia and my brian!!