PLANET EARTH AND THE SUN WILL NOT LAST FOREVER ....
As their cores keep shrinking over time.
Just like the telomere of the cells of humans keeps shrinking over time due to Virus neutrinos, which leads to ageing and death.
It is essential that before a catastrophe happens ageing and death and life in outer space are conquered since humans will need to learn to live in other solar systems.
Let our protonselectrons win the battle for survival.
THE FINAL FRONTIER
Low gravity conquered. No things floating around. A strong enough net positive core in the spaceship that can keep grounded the net negative outer layers. That will do nicely.
Manufacture drinking water, breathable air and rocket fuel from the atmosphere of planets, and not to forget electricity with solar panels from sunlight or bright planets and stored in large batteries!
Friendly bacteria, how friendly can they be? Some like to eat inorganic matter and there is plenty of it in outer space, including asteroids. Handy that, since there may be no need for space travellers to live in hostile planets controlled by virus neutrinos. If they can feed on friendly bacteria farmed in space vans, so much the safer!
The spaceship could travel like a sail boat pushed by the solar wind, or use ion engines (is what some scientists say!), and if humans have conquered ageing and death no problem then if it takes thousands of years to reach another star!
And there is no need to wait for virus neutrinos to destroy Planet Earth and the sun. An action plan is needed, long before a catastrophe happens, that's what I say.
Billions of species on Planet Earth, most of them don't have a chance and will become extinct. But humans do have a chance. They could beat virus neutrinos. They could support the cause. They could survive.
Because this is the final frontier: Humans must move from solar system to solar system as virus neutrinos destroy them gradually. And yes, many new solar and planetary systems are always being born! DESCRIPTION OF IMAGE: An atom with host protonselectrons(positive and negative charge, head and tail) and virus neutrinos in neutrons. Virus neutrinos are shrinking the core of atoms of Planet Earth with heat (and so atoms are ejected into outer layers with volcanoes, etc), until eventually Planet Earth will become defunct. The same is happening to the core of the Sun.