Big Rip
In their paper, the authors consider a hypothetical example with w = −1.5, H0 = 70 km/s/Mpc, and Ωm = 0.3, in which case the Big Rip would happen approximately 22 billion years from the present. In this scenario, galaxies would first be separated from each other about 200 million years before the Big Rip. About 60 million years before the Big Rip, galaxies would begin to break up as small parts as gravity becomes too weak to hold them together. Planetary systems like the Solar System would become gravitationally unbound and all planets will be separated from their orbit in about three months before the Big Rip. Planets would fly off into the rapidly expanding universe. In the last minutes, stars and planets would be torn apart, and the now dispersed atoms would be destroyed about 10−19 seconds before the end. At the time the Big Rip occurs, even spacetime itself would be ripped apart and the scale factor would be infinity.