According to Chandrasekhar Limit,the mass of an object can not exceed than 1.4 times the mass of the sun.But according to some other theories,the sun was very large at former times and earth and other planets of our solar system are part of the sun separated from it because of it getting overmassed and (earth and other planets) cooled down to gain a form as they are today and leaving the sun to become as it is.Then on relating both the points (first two lines) we get that the sum of mass of all planets in our solar system should be the 40% of the mass of the sun.So I want to ask if really the sum of mass of all planets in our solar system is equal to the 40% of the mass of the sun?
closed as off-topic by ACuriousMind♦, Floris, Kyle Kanos, Qmechanic♦ Aug 2 '15 at 14:54
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I can see that this question has been downvoted but I think it still deserves a proper answer.
First, it is the Chandrasekhar (one word) limit, named after the Indian-American astrophysicist Subrahmanyan Chandrasekhar.
Second, the Chandrasekhar limit does not mean that an object cannot be more massive than 1.4 times the mass of the Sun. There are plenty of objects (stars) that are a heck of a lot more massive than that. For instance, right here in our relative neighborhood ("only" some 600 light years from here) is the star Betelgeuse, which weighs almost 8 solar masses.
The Chandrasekhar limit is about stars that have exhausted their nuclear fuel collapsing into neutron stars under their own gravity. If they weigh less than 1.4 times the Sun, this collapse does not happen as the pressure is not large enough to compress ordinary matter into neutrons.
As to the sum of the masses of all planets in the solar system, the biggest of them, Jupiter, has about 0.1% of the mass of the Sun. Saturn, just over half as much. Uranus and Neptune, one tenth of that. So never mind 40%, the total doesn't even come close to 1%.