Evidence from type Ia supernovae for an accelerating Universe
Over the past five years two teams have used type Ia supernovae to trace the expansion of the Universe to a look back time more than 70% of the age of the Universe. These observations show an accelerating Universe which is best explained by a cosmological constant, or other form of dark energy with an equation of state near w=p/ρ=-1. There are many possible lurking systematic effects, and while difficult to completely eliminate, none of these appears large enough to challenge current results....[Show more]
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