a)about half as long as the Sun
b)much less than half as long as the Sun
c)about twice as long as the Sun
d)much longer than twice as long as the Sun
2007-03-03 05:32:17 · 3 answers · asked by matt g 1 in Science & Mathematics ➔ Astronomy & Space
b. Life expectancy is roughly proportional to mass to the -2.5 power.
2007-03-03 06:39:40 · answer #1 · answered by injanier 7 · 0⤊ 0⤋
in general all stars go though the same phases of existance due to the amount of matter needed for it to ignight but the cycles can vary depending on the ratio of material types its made ofand how it is feed in the course of its liftime.
2007-03-07 09:54:15 · answer #2 · answered by Tony N 3 · 0⤊ 0⤋
it s not any of these
but if i had to pick one
i would pick (A_) just like a candle that burns both ends..
2007-03-03 13:37:11 · answer #3 · answered by Anonymous · 0⤊ 0⤋