How long is it until our solar system ceases to exist?
Question asked by: dannyboy
It is thought that the sun is approching roughly the halfway point of its life.
And the solar system - the system of the sun - lives and dies with its star, at least in turns of being active, because it is the heat and energy from the sun that sustains the reactions on the planets that are within the reach of its light and gravitational force.
The sun has several billion years to go yet until it cools and expands, so we are no immediate danger from the sun - in fact we can guarantee that by the time the sun is big enough, anything we recognise as human won't exist.
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