Cosmologists suggested that the solar system may be situated within a billion-light-year-wide bubble of low density surrounded by a shell of high density, which would create, for observers on the earth, the illusion that the universe’s expansion is accelerating.
Cosmologists suggested that the solar system may be situated within a billion-light-year-wide bubble of low density surrounded by a shell of high density, which would create, for observers on the earth, the illusion that the universe’s expansion is accelerating.