2007-08-11 23:14:49 · 6 answers · asked by Peter V 5 in Science & Mathematics ➔ Physics
The sun never ignited.
It is not a flame as we know it. There is not oxygen making things burn. The nuclear reaction goes off under the required heat and pressure as the gas cloud condenses and forms a nascent star in the stellar nursery
2007-08-11 23:21:02 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Gravity compassed the huge mass of hydrogen gas that the sun formed from, this compression caused space inside the sun to become restricted to the point where the excited atoms rubbed together and due to the very high temperatures they began to stick, fuse, this was the beginning of the life of the sun as a star.
2007-08-15 21:35:42 · answer #2 · answered by johnandeileen2000 7 · 0⤊ 0⤋
Gravity. Because of the gravitational attraction the mass is pulled towards the cenretre and in that process the enormous pressure and temperature that is reached, started a nuclear fusion reaction.
Jupiter would have become a star (sun is a star) if it were heavier by a few times?
2007-08-12 06:22:47 · answer #3 · answered by Swamy 7 · 0⤊ 0⤋
Gravity caused enough pressure to start fusion of the hydrogen molecules into helium. Gravity is the unique property of matter that allows it to return to its unbound free energy state.
2007-08-12 06:24:22 · answer #4 · answered by misoma5 7 · 0⤊ 0⤋
well unless you are religious i think that you can safely assume that it was indeed a what not a who that ignited it. XD
2007-08-12 06:38:40 · answer #5 · answered by sammy.x.x.o.o 2 · 0⤊ 0⤋
[if you're still in some type of school] --->have you ever asked your science teacher?
[if not] --->if you don't get the answer here that you think is correct, have you ever googled it before? google does amazing stuff. so does yahoo. =]
2007-08-12 06:24:23 · answer #6 · answered by valeriebby 1 · 0⤊ 0⤋