Dark-energy prospectors concluded from a study of ancient supernovae that the mysterious repulsive force was at work in the universe as soon as 5 billion years after the big bang, which would tend to undermine theories holding that dark energy was an attractive force in the early universe.
Dark-energy prospectors concluded from a study of ancient supernovae that the mysterious repulsive force was at work in the universe as soon as 5 billion years after the big bang, which would tend to undermine theories holding that dark energy was an attractive force in the early universe.