- IPA[ˌ(h)wīt ˈdwôrf]
- a small very dense star that is typically the size of a planet. A white dwarf is formed when a low-mass star has exhausted all its central nuclear fuel and lost its outer layers as a planetary nebula.
noun: white dwarf, plural noun: white dwarfs
dwarfs 或 dwarves 攏ㄟˇ塞...
...star, often passing through the red giant stage, will compress itself into a white dwarf, a neutron star or a black hole.(a)what (b)that (c)whether (d)whyMass ...
星星的末梢,星星的尾端,星星的末端 at the extremity of the star 圖片參考：http://hk.geocities.com/science_valley/planet/white_dwarf.jpg 圖片參考：http://hk.geocities.com/science_valley/planet/m27_dumbbell_nebula.jpg