Our solar system 4 to 5 billion years ago
Thats when the earth was created
The earth will last only as long as the sun remains
Many nuclear reaction take place inside the sun
Energy is produce from nuclear reaction
The sun will expand when nuclear reaction stop
After which the sun will become a red giant
The red giant will also engulf the sun
Which will bring about the end of earth
According to experts the sun will continue to burn for about 5 billion more years