Please!
2007-12-09 10:31:44 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
It is close to 5 billion years old. Stars begin to shine through gravitational collapse of infalling hydrogen. At this stage they are called "protosuns." When they get sufficiently hot and dense, nuclear fusion begins, and these are called "true" suns.
Our sun began shining through nuclear fusion somewhere between 4.5 and 5 billion years ago--it is difficult to tell precisely when.
2007-12-09 10:38:18 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Ian Ridpath, noted Astronomer and Author of ASTRONOMY, DK Publishing, NY, NY, says that the Sun is 4.6 Billion Years old, and should stay the same for roughly 5 Billion more years.
The Sun is 109 times the diameter of Earth and the Sun contains 99 percent of all of the matter in this Solar System.
Cheers,
Zah
2007-12-09 11:54:03 · answer #2 · answered by zahbudar 6 · 1⤊ 0⤋
Find out when the solar system was created first.
But, I think about 4.5 billion years.
2007-12-09 10:36:21 · answer #3 · answered by Rina 3 · 1⤊ 0⤋
The Sun is about 4.5 billion years old.
seriously though, you could've just searched for that yourself...
2007-12-09 10:35:58 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Sun is a thrid generation star. It is about 4.6billion years old as per scientists. Our universe is 13.7billion years old.
2007-12-09 10:54:43 · answer #5 · answered by Chandramohan P.R 7 · 1⤊ 0⤋
About 4.5 billion years.
2007-12-09 10:35:42 · answer #6 · answered by Dan H 7 · 1⤊ 0⤋
about 4.6 billion years
2007-12-09 10:36:41 · answer #7 · answered by Anonymous · 1⤊ 0⤋
4.5 billion years, i think
2007-12-09 10:34:22 · answer #8 · answered by Zach S 4 · 0⤊ 0⤋
Why? Are you getting it a birthday card?
2007-12-09 18:29:53 · answer #9 · answered by Ultraviolet Oasis 7 · 0⤊ 0⤋