[Physicist]

4.6e9 years x 4.2e9 kg/s mass lost = 6.1e26 kg loss

Very good. And how massive do you think the sun is?

I simply find it hard to believe that the Sun will be burnt out with 99.93% of its mass remaining.

Why? How much would you expect to remain?

[4CJ]

And how massive do you think the sun is?

1.99e30 kg.

How much would you expect to remain?

A lot less. Why do stars collapse? A .03% change in mass shouldn't cause it should it?