How massive could a star be and still survive for 9 billion years?
Astronomy question, Could you please explain how you get the answer, formula and procedures. I really can't get it right. My last answer was 1.04 x 10^4
- ZardozLv 78 months ago
The main sequence life of a star is = T⊙(M/M⊙)⁻²˙⁵; where T⊙ is the main sequence life of The Sun (10 billion years), M⊙ is the mass of The Sun (1.98 kg) and M is the value you're looking for.
Ergo: M = 1.98 / ²˙⁵√.9 kg = 2.06 kg
Update: 1/²˙⁵√.9 = 1.043Source(s): [n] = 10ⁿ