Take a look at this image of the Helix nebula La Silla Observatory.The legend below indicates that Spa?
ns to 2.5 years Star light when the size of our sun go supernova and become a white dwarf star. But how is that when our star has a diameter Only ten times larger than the diameter of Jupiter, will eventually spread its emissions to 2.5 light years away? STAR goes supernova after all only when he got his "late middle age" to reduce its mass nearly half of its original mass. why he spreads the gas Ramna these great distances, and why not explode sun itself under extreme pressure just one hour of its formation is the first place? [I am not astro student, but curious to know about it] http://antwrp.gsfc.nasa.gov/apod/ap090303.html
It says nothing about a supernova. You make me say in their mouth. If you pick holes in their arguments make sure you base them on what they actually said and not what you think they said. It refers to a planetary nebula: something completely different. They are caused by the star shedding the outer layers of its atmosphere during the red giant phase of its life. It is this ultra strong solar wind is responsible for most of the mass loss rather than reactions Nuclear only a relatively small. The nebula is almost infinitely less dense than the material in the young star. Here no more material there, it is simply spread out more.
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