I need help im doing a research paper.. please help me!
2007-10-08 04:56:08 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
About six billion years ago a cloud of hydrogen gas and dust began to collapse towards its centre of gravity, over millions of years this caused the core to become very hot because of friction due to molecules of hydrogen rubbing against each other due to the restriction of space, the heat and pressure reached a point where hydrogen atoms began to stick, fuse together to form helium, a star, our sun, was born. Radiation caused the compression of gravity to slow down and the sun became stable, it will continue this way for billions of years.
2007-10-08 16:39:30 · answer #1 · answered by johnandeileen2000 7 · 0⤊ 0⤋
Its probably a 3rd generation star. The earlier stars in the universe were probably rather large and went through their lives rather quickly. The early stars were likely to end their existence as supernovae, spreading a great deal of their substance, along with newly created elements into the interstellar gulf. Quantities of this matter from many preexisting suns, slowly coallesed into a rotating disk, much thicker at the center. As gravity caused the center to collapse into itself, the new sun became hotter and hotter due to compression and when its mass was great enough and the interior heat hot enough, nuclear fusion was initiated and a star was born. In a similar fashion planets condensed out of the disk and grew in size by accretion. But they were too small to achieve stellar ignition. Much of the heat in the interior of the earth, dates from the original period of planetary formation.
2007-10-08 12:38:14 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The sun, like any star; formed slowly as gravity pulled more and more molecules in a nebula (gas cloud) closer and closer until it reached critical mass and fusion started. At the same time, heavier molecules formed further out, and they eventually formed into planets. Rockier ones closer in and gaseous ones further out.
If you are writing a paper though; visit the library. Teachers don't take wikopedia or yahoo answers.
2007-10-08 12:05:56 · answer #3 · answered by jared_e42 5 · 1⤊ 0⤋
Hi. A large cloud of hydrogen with some supernova debris mixed in. It is possible that the collapse of this cloud was a result of the supernova's shock wave. The bulk of the cloud condensed into the Sun and some of the debris was left in orbit.
2007-10-08 11:58:50 · answer #4 · answered by Cirric 7 · 1⤊ 0⤋
the sun is just a star. gravitational forces keep it there.....along with us!
2007-10-08 11:59:43 · answer #5 · answered by Tiffany 5 · 0⤊ 1⤋
God created it
2007-10-08 12:00:13 · answer #6 · answered by lindsey434 2 · 0⤊ 3⤋