Our sun is also estimated reach the end of it's life in about 5 billion years. In the process it will expand and engulf the inner planets before completely running out of fuel and collapsing (but probably not into a black hole). So not quite within 7 billion years unless we have colonized other solar systems like you mentioned. I'm being pedantic though lol
We would migrate from this planet long before then...there are millions of them
Our sun is also estimated reach the end of it's life in about 5 billion years. In the process it will expand and engulf the inner planets before completely running out of fuel and collapsing (but probably not into a black hole). So not quite within 7 billion years unless we have colonized other solar systems like you mentioned. I'm being pedantic though lol