Our solar system is 4.57 billion years old.

 

Our solar system is 4.57 billion years old.

Well, give or take 30 million years(ish). Accurately speaking, it is 4.571 billion years old.

Scientists estimate that in about 5 billion years, our Sun will expand becoming a Red Giant.

In about 7.5 billion years its expanding surface will swallow up and engulf the Earth.