So Earth is like 55 in human years?
No, the Earth will be around long after it is no longer habitable by humans or by macro lifeforms. The Earth may migrate outwards in the Solar System as the Sun’s mass decreases as the result of radiation of the energy produced by its nuclear fusion and mass ejections. It becomes a matter of which expands outwards into the outer Solar System faster, the Earth’s orbit or the Sun’s expanding diameter. In either case, the Earth’s atmosphere, hydrosphere, and upper lithosphere will have long before become vaporised and stripped away from the Earth into the outer reaches of the Solar System. Human life, however, will have long ago become extinct upon the Earth due to an assortment of earlier extinction level events.
The movement of the Earth to a more distant orbit from the Sun by natural or artificial means will not alter this outcome. The only hope for human survival is for the community to migrate its surviving societies to asteroidal and space habitats in the outer Solar system, interstellar dark planetery systems, and other stellar systems.